[v3.13.2+fabric-1.21] Connection is lost (almost) immediately after (LAN and Essential) multiplayer world join, with "Internal Exception: io.netty.handler.codec.EncoderException: io.netty.util.IllegalReferenceCountException: refCnt: 0".

[RokeJulianLockhart]

What happened?

Errata

I attempted to join a world via LAN and Elemental, hosted on another machine (same hardware, launcher, and mod-pack, but different OS) but it would frequently (yet inconsistently) fail with any of the undermentioned error messages:

• Reference Count Error

  1. Quotation

     Connection Lost

     Internal Exception: io.netty.handler.codec.EncoderException: io.netty.util.IllegalReferenceCountException: refCnt: 0

  2. Screenshot

     

• Mere Disconnection Error

  1. Quotation

     Connection Lost

     Disconnected

  2. Screenshot

     

(Lack of) Duplicates

https://github.com/TheCSMods/mc-better-stats/issues?q=is%3Aissue+is%3Aopen+io.netty.handler.codec.EncoderException returned 0 results at +2024-10-19T10:16:56+01:00.

Steps to reproduce

1. Environment Configuration

   1. Install the OS:

      • Windows 11

        Via https://www.microsoft.com/en-us/software-download/windows11 (or https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewiso).

        1. Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" | Format-List

        2. SystemRoot                : C:\WINDOWS
           BuildBranch               : ge_release
           BuildLab                  : 26100.ge_release.240331-1435
           BuildLabEx                : 26100.1.amd64fre.ge_release.240331-1435
           CompositionEditionID      : Enterprise
           CurrentBuild              : 26100
           CurrentBuildNumber        : 26100
           CurrentMajorVersionNumber : 10
           CurrentMinorVersionNumber : 0
           CurrentType               : Multiprocessor Free
           CurrentVersion            : 6.3
           DisplayVersion            : 24H2
           EditionID                 : Professional
           InstallationType          : Client
           InstallDate               : 1719779588
           LCUVer                    : 10.0.26100.2152
           ProductName               : Windows 10 Pro

      • Fedora 40

        Via https://download.fedoraproject.org/pub/fedora/linux/releases/40/Spins/x86_64/iso/Fedora-KDE-Live-x86_64-40-1.14.iso.

        1. kinfo

        2.       Operating System: Fedora Linux 40
               KDE Plasma Version: 6.2.1
           KDE Frameworks Version: 6.7.0
                       Qt Version: 6.7.2
                   Kernel Version: 6.11.3-200.fc40.x86_64 (64-bit)
                Graphics Platform: Wayland
                       Processors: 12 × AMD Ryzen 5 7600X 6-Core Processor
                           Memory: 30.4 GiB of RAM
               Graphics Processor: AMD Radeon RX 7900 XTX

   2. Install Prism Launcher:

      Windows	winget install --id 'PrismLauncher.PrismLauncher' --version 8.4
      Fedora	flatpak install 'https://dl.flathub.org/repo/appstream/org.prismlauncher.PrismLauncher.flatpakref' && \ flatpak update 'app/org.prismlauncher.PrismLauncher/x86_64/stable' --commit=0e60b64e9454ee7808fa1cd24849debbb1c3efbfc3a6dfa4cf40d4202bceb904

2. Import (and configure) the modifications:

   1. Download https://kim.nl.tab.digital/s/QsmpqSeZnwsQ2BY.

   2. Create an instance:

      

   3. Select the pack:

      1. 

      2. 

   4. Leave these disabled (or disable them):

      

   5. If you see this, create a new one. You shouldn't see it the first time you do so.

      

   6. Wait for it to extract and import:

      1. 

      2. 

3. Confirmation

   1. Launch the instance.

   2. Host a world on one machine.

   3. Attempt to join it on the other.

      This should consistently work, without any failures.

4. Better Statistics Screen Installation

   1. Install https://modrinth.com/mod/better-stats/version/3.13.2+fabric-1.21:

      1. 

      2. 

   2. Enable it (if not already so):

      

5. Confirmation

   1. Launch the instance.

   2. Host a world on one machine.

   3. Attempt to join it on the other.

      If the error doesn't reproduce immediately, continue to attempt to rejoin. It should occur consistently frequently.

Relevant log output or crash report

I've attached it at https://gist.github.com/RokeJulianLockhart/d2a7ca0b31f2eb45d8e835112749da86/907e0eff17695c8e056f47c9453b99c3722a1fb5#file-slmgf5-txt-log-L6847. It isn't from after instance closure - instead, it's immediately after the reference count error occurred:

Other installed mods

Operative

Without BS.

• Extra Mod Integrations [0.4.6+1.20.1]
• Collective [7.84]
• BCLib [3.0.14]
• Chipped x Create Fabric [1.0.0]
• More Armor Trims [1.4.0-1.20.1]
• Athena [3.1.2]
• Fast IP Ping [1.0.5]
• spark [1.10.53]
• YetAnotherConfigLib [3.6.0+1.20.1-fabric]
• YUNG's Better Witch Huts [1.20-Fabric-3.0.3]
• Visual Workbench [8.0.0]
• Simple Discord Rich Presence [4.0.3-build.40+mc1.20.1]
• EMIffect [1.1.2+mc1.20.1]
• Faster Random [5.1.0]
• Create [0.5.1-f-build.1417+mc1.20.1]
• Polymorphic Energistics [0.1.1-1.20.1]
• Iris Flywheel Compat [1.1.4]
• FTB Chunks [2001.3.1]
• Nullscape [1.2.8]
• Xaero's World Map [1.39.0]
• Fzzy Config [0.5.4+1.20.1]
• FerriteCore [6.0.1]
• Clear Despawn [1.1.15]
• Animal Feeding Trough [1.1.0+1.20.1]
• ImmediatelyFast [1.2.21+1.20.4]
• Item Borders [1.2.2]
• Lithium [0.11.2]
• Smarter Farmers [1.20-2.1.0]
• Fabric Language Kotlin [1.12.3+kotlin.2.0.21]
• Lootr [0.7.33.81]
• AmbientSounds [6.1.1]
• Cherished Worlds [6.1.6+1.20.1]
• Fabric Shield Lib [1.7.2-1.20.1]
• Create Enchantment Industry [1.2.16]
• Starlight [1.1.2+fabric.dbc156f]
• DarkUtilities [17.0.5]
• Croptopia [3.0.3]
• Chipped [3.0.7]
• Amendments [1.20-1.2.12]
• Just Enough Items [15.20.0.104]
• Better Archeology [1.2.1-1.20.1]
• AE2 EMI Crafting Integration [1.3.1]
• DynamicTrim [1.4.1]
• Satisfying Buttons [1.1.2]
• SwingThrough [1.0.6+1.20]
• Common Network [1.0.5-1.20.1]
• CreativeCore [2.12.14]
• FTB XMod Compat [2.1.1]
• NetherPortalFix [13.0.1]
• Supplementaries Squared [1.20-1.1.15]
• TCD Commons API [3.12.3+fabric-1.20.1]
• Thaumon [2.3.0+1.20.1]
• More Music Discs [1.20.1-33.1-fabric]
• Frostiful [1.0.11]
• oωo [0.11.2+1.20]
• Easy Anvils [8.0.2]
• EpheroLib [1.2.0]
• Polytone [1.20-2.3.3]
• Cloth Config v11 [11.1.136]
• Load My F***ing Tags [1.0.2+1.20]
• End Remastered [5.2.4]
• Mouse Tweaks [2.26]
• Applied Energistics 2 [15.2.12]
• Basic Shields [Fabric] [1.4.1-1.20.2]
• Backported Wolves & Terralith - Compat [1.0]
• Entity Model Features [2.2.6]
• Overflowing Bars [8.0.1]
• 3d-Skin-Layers [1.6.7]
• YUNG's API [1.20-Fabric-4.0.6]
• Better Nether [9.0.10]
• Stoneworks [8.0.0]
• Lavender [0.1.9+1.20]
• Chat Heads [0.13.3]
• Item Filters [2001.1.0-build.53]
• Uranus [1.7.1]
• ChatAnimation [1.0.5]
• You Shall Not Spawn [2.0.2]
• Fusion [1.1.1]
• More Chat History [1.3.0]
• Villager Names [8.1]
• Decorative Blocks [4.1.3]
• Villagers Plus [3.1]
• Animatica [0.6.1+1.20.4]
• Bobby [5.0.1]
• YUNG's Better Ocean Monuments [1.20-Fabric-3.0.4]
• Jupiter [1.1]
• YUNG's Extras [1.20-Fabric-4.0.3]
• Create: New Age [1.1.2]
• More Culling [1.20.4-0.24.0]
• DarkPaintings [17.0.4]
• FTB Quests [2001.4.9]
• Neruina [${version}]
• Dynamic FPS [3.7.3]
• BadOptimizations [2.1.4]
• ChoiceTheorem's Overhauled Village [3.4.9a]
• Comforts [6.4.0+1.20.1]
• Memory Leak Fix [1.1.5]
• Configured [2.2.3]
• essential-container [1.0.0]
• Lithostitched [1.3.1a]
• GeckoLib 4 [4.4.9]
• Yeetus Experimentus [2.3.0-build.4+mc1.20.1]
• AE2 + Mouse Tweaks Fix [2.0.0+1.20.1+fabric]
• Balm [7.3.9]
• Creeper Overhaul [3.0.2]
• FabricSkyBoxes Interop [1.3.6+mc1.20.1-build.50]
• Simple Voice Chat [1.20.1-2.5.24]
• Winterly [0.9.3+1.20]
• Croptopia Additions [2.0.0]
• Not Enough Crashes [4.4.7+1.20.1]
• Ping Wheel [1.9.1]
• EMI Trades [1.2.1+mc1.20.1]
• Craftify [1.16.0]
• Patchouli [1.20.1-84-FABRIC]
• Model Gap Fix [1.15]
• Create: Compat BetterEnd & BetterNether [1.1]
• Moonlight [1.20-2.13.13]
• EMI Loot [0.7.4+1.20.1+fabric]
• TooFast [1.2.0]
• Continuity [3.0.0-beta.5+1.20.1]
• Better End [4.0.11]
• CraftTweaker [14.0.43]
• Controlling For Fabric [12.0.2]
• Konkrete [1.8.1]
• Gpu memory leak fix mod [1.20.1-1.8]
• AppleSkin [2.5.1+mc1.20]
• Aquamirae [6]
• Way2Way [0.0.6]
• Windchimes [1.2.4+1.20]
• Debugify [1.20.1+2.0]
• Cristel Lib [1.1.5]
• Better Advancements [0.4.2.10]
• Pick Up Notifier [8.0.0]
• Artifacts [9.5.13]
• FTB Essentials [2001.2.2]
• Better Mount HUD [1.2.2]
• Highlighter [1.1.9]
• Cosmetic Armor [1.6.0]
• Mod Menu [7.2.2]
• Shulker Box Tooltip [4.0.4+1.20.1]
• Iceberg [1.1.18]
• NotEnoughAnimations [1.7.6]
• YUNG's Better Desert Temples [1.20-Fabric-3.0.3]
• Custom Entity Attributes (CEA) [1.0.0]
• Ice and Fire: Dragon Finder [1.0.0-1.20.1]
• OptiGUI [2.3.0-beta.6+1.20]
• Capes [1.5.2+1.20]
• lazy-language-loader [0.3.3]
• Ice And Fire [0.6.3]
• Fabric Seasons [2.4.2-BETA+1.20]
• Puzzles Lib [8.1.24]
• Build Guide [0.4.3]
• YUNG's Bridges [1.20-Fabric-4.0.3]
• Botarium [2.3.4]
• Create: Copycats+ [2.1.4+mc.1.20.1-fabric]
• Easy Magic [8.0.1]
• JamLib [0.6.1+1.20.x]
• FTB Ranks [2001.1.3]
• Necronomicon [1.6.0]
• Derelict [1.1.1]
• Jade [11.12.0+fabric]
• No Chat Reports [1.20.1-v2.2.2]
• Resourcefulconfig [2.1.2]
• Elytra Slot [6.4.4+1.20.1]
• Boat Item View Fabric [0.0.5]
• Terralith Andesite Patch [1.0.0]
• Remove Reloading Screen [4.0.6.1+mc1.20.1-fabric]
• Sodium Extra [0.5.4+mc1.20.1-build.115]
• Twigs [3.1.0]
• Sophisticated Backpacks [1.20.1-3.20.11.26]
• Friends&Foes - Beekeeper Hut [2.0.1]
• EMI Enchanting [0.1.2+1.20.1]
• Falling Leaves [1.15.6]
• StackDeobfuscator [1.4.3+08e71cc]
• Tierify [1.2.0]
• Sophisticated Core [1.20.1-0.6.33.31]
• EnchantmentDescriptions [17.1.18]
• EMI [1.1.16+1.20.1+fabric]
• Structory: Towers [1.0.7]
• Indium [1.0.34+mc1.20.1]
• Deeper and Darker [1.3.2.1]
• Fabric Seasons: Terralith Compat [1.0-2.3.7]
• Puzzle [1.5.2+1.20]
• Backported Wolves [1.1.0-1.19.3-1.20.4]
• FPS Reducer [1.20-2.5]
• Iris [1.7.5+mc1.20.1]
• PigPen [15.0.2]
• When Dungeons Arise [2.1.57]
• Better Tridents [8.0.1]
• Fabric API [0.92.2+1.20.1]
• Custom Item Attributes (CIA) [2.0.0]
• Recipe Advancements Nuker [1.20-1.4]
• Friends&Foes - Flowery Mooblooms [2.0.2]
• Resourceful Lib [2.1.29]
• Forge Config API Port [8.0.0]
• FastQuit [3.0.0+1.20+]
• Remove Terralith Intro Message [1.1]
• Double Doors [5.9]
• FTB Teams [2001.3.0]
• Nether Depths Upgrade [fabric-3.1.6-1.20]
• Paginated Advancements [2.3.0]
• Runelic [18.0.2]
• Friends & Foes [3.0.5]
• Bookshelf [20.2.13]
• Block Swap [5.0.0.0]
• YOSBR [0.1.2]
• Dungeon Now Loading [1.5]
• YUNG's Better Strongholds [1.20-Fabric-4.0.3]
• Forge Config Screens [8.0.2]
• Enhanced Block Entities [0.9+1.20]
• Visuality [0.7.1+1.20]
• Zoomify [2.14.0+1.20.1]
• Server Browser [1.1.2]
• Create: Steam 'n' Rails [1.6.4+fabric-mc1.20.1]
• FTB Library [2001.2.4]
• SuperMartijn642's Config Lib [1.1.8+a]
• Better Beds [1.3.0]
• Xaero's Minimap [24.5.0]
• Structory [1.3.5]
• Searchables [1.0.3]
• Supplementaries [1.20-2.8.17]
• e4mc [5.2.1]
• Language Reload [1.6.1+1.20.1]
• Nicer Skies [1.3.0]
• BetterCompatibilityChecker [4.0.1]
• Sodium [0.5.11+mc1.20.1]
• Better Ping Display [1.1.1]
• Swampier Swamps [1.20-4.0.0]
• Right Click Harvest [3.2.3+1.19.x-1.20.1-fabric]
• Clumps [12.0.0.4]
• Waystones [14.1.5]
• Roguelike Dungeons [2.0.4-build4-1.20.1-fabric]
• WaveyCapes [1.4.10]
• Terralith [2.5.4]
• Fabrishot [1.10.1]
• Obscure API [16]
• Better Trim Tooltips [1.0.1]
• Legendary Tooltips [1.4.5]
• AttributeFix [21.0.4]
• Advancement Plaques [1.6.7]
• Faux-Custom-Entity-Data [6.0.1]
• Trinkets [3.7.2]
• Prism [1.0.5]
• Seamless Loading Screen [2.0.3+1.20.1]
• Tiny Skeletons [8.0.1]
• Towns and Towers [1.10.2
  ]
• Things [0.3.3+1.20]
• Block Runner [8.0.4]
• Icarus [2.10.0]
• Blur (Fabric) [3.1.0]
• Create Crafts & Additions [NONE]
• Dungeons and Taverns [3.0.3.f]
• BetterF3 [7.0.2]
• ModernFix [5.19.4+mc1.20.1]
• YUNG's Better Dungeons [1.20-Fabric-4.0.4]
• Essential Dependencies [0]
• Architectury [9.2.14]
• Fabric Seasons: Extras [1.3.2-BETA+1.20]
• Presence Footsteps [1.9.4+1.20.1]
• Leaves Be Gone [8.0.0]
• EntityCulling [1.7.0]
• You're in Grave Danger [2.0.10]
• Thermoo [2.3.2]
• Polymorph [0.49.7+1.20.1]
• Concurrent Chunk Management Engine [0.2.0+alpha.11.13]
• Sophisticated Storage [1.20.1-0.10.44.23]
• Fabric Seasons: Croptopia Compat [1.0-2.2.2]
• Geophilic [3.1.3]
• Entity Texture Features [6.2.5]
• FabricSkyBoxes [0.7.3+mc1.20.1]
• Reese's Sodium Options [1.7.2+mc1.20.1-build.101]

Inoperative

With BS installed and enabled.

• Extra Mod Integrations [0.4.6+1.20.1]
• Collective [7.84]
• BCLib [3.0.14]
• Chipped x Create Fabric [1.0.0]
• More Armor Trims [1.4.0-1.20.1]
• Athena [3.1.2]
• Fast IP Ping [1.0.5]
• spark [1.10.53]
• YetAnotherConfigLib [3.6.0+1.20.1-fabric]
• YUNG's Better Witch Huts [1.20-Fabric-3.0.3]
• Visual Workbench [8.0.0]
• Simple Discord Rich Presence [4.0.3-build.40+mc1.20.1]
• EMIffect [1.1.2+mc1.20.1]
• Faster Random [5.1.0]
• Create [0.5.1-f-build.1417+mc1.20.1]
• Polymorphic Energistics [0.1.1-1.20.1]
• Iris Flywheel Compat [1.1.4]
• FTB Chunks [2001.3.1]
• Nullscape [1.2.8]
• Xaero's World Map [1.39.0]
• Fzzy Config [0.5.4+1.20.1]
• FerriteCore [6.0.1]
• Clear Despawn [1.1.15]
• Animal Feeding Trough [1.1.0+1.20.1]
• ImmediatelyFast [1.2.21+1.20.4]
• Item Borders [1.2.2]
• Lithium [0.11.2]
• Smarter Farmers [1.20-2.1.0]
• Fabric Language Kotlin [1.12.3+kotlin.2.0.21]
• Lootr [0.7.33.81]
• AmbientSounds [6.1.1]
• Cherished Worlds [6.1.6+1.20.1]
• Fabric Shield Lib [1.7.2-1.20.1]
• Create Enchantment Industry [1.2.16]
• Starlight [1.1.2+fabric.dbc156f]
• DarkUtilities [17.0.5]
• Croptopia [3.0.3]
• Chipped [3.0.7]
• Amendments [1.20-1.2.12]
• Just Enough Items [15.20.0.104]
• Better Archeology [1.2.1-1.20.1]
• AE2 EMI Crafting Integration [1.3.1]
• DynamicTrim [1.4.1]
• Satisfying Buttons [1.1.2]
• SwingThrough [1.0.6+1.20]
• Common Network [1.0.5-1.20.1]
• CreativeCore [2.12.14]
• FTB XMod Compat [2.1.1]
• NetherPortalFix [13.0.1]
• Supplementaries Squared [1.20-1.1.15]
• TCD Commons API [3.12.3+fabric-1.20.1]
• Thaumon [2.3.0+1.20.1]
• More Music Discs [1.20.1-33.1-fabric]
• Frostiful [1.0.11]
• oωo [0.11.2+1.20]
• Easy Anvils [8.0.2]
• EpheroLib [1.2.0]
• Polytone [1.20-2.3.3]
• Cloth Config v11 [11.1.136]
• Load My F***ing Tags [1.0.2+1.20]
• End Remastered [5.2.4]
• Mouse Tweaks [2.26]
• Applied Energistics 2 [15.2.12]
• Basic Shields [Fabric] [1.4.1-1.20.2]
• Backported Wolves & Terralith - Compat [1.0]
• Entity Model Features [2.2.6]
• Overflowing Bars [8.0.1]
• 3d-Skin-Layers [1.6.7]
• YUNG's API [1.20-Fabric-4.0.6]
• Better Nether [9.0.10]
• Stoneworks [8.0.0]
• Lavender [0.1.9+1.20]
• Chat Heads [0.13.3]
• Item Filters [2001.1.0-build.53]
• Uranus [1.7.1]
• ChatAnimation [1.0.5]
• You Shall Not Spawn [2.0.2]
• Fusion [1.1.1]
• More Chat History [1.3.0]
• Villager Names [8.1]
• Decorative Blocks [4.1.3]
• Villagers Plus [3.1]
• Animatica [0.6.1+1.20.4]
• Bobby [5.0.1]
• YUNG's Better Ocean Monuments [1.20-Fabric-3.0.4]
• Jupiter [1.1]
• YUNG's Extras [1.20-Fabric-4.0.3]
• Create: New Age [1.1.2]
• More Culling [1.20.4-0.24.0]
• DarkPaintings [17.0.4]
• FTB Quests [2001.4.9]
• Neruina [${version}]
• Dynamic FPS [3.7.3]
• BadOptimizations [2.1.4]
• ChoiceTheorem's Overhauled Village [3.4.9a]
• Comforts [6.4.0+1.20.1]
• Memory Leak Fix [1.1.5]
• Configured [2.2.3]
• essential-container [1.0.0]
• Lithostitched [1.3.1a]
• GeckoLib 4 [4.4.9]
• Yeetus Experimentus [2.3.0-build.4+mc1.20.1]
• AE2 + Mouse Tweaks Fix [2.0.0+1.20.1+fabric]
• Balm [7.3.9]
• Creeper Overhaul [3.0.2]
• FabricSkyBoxes Interop [1.3.6+mc1.20.1-build.50]
• Simple Voice Chat [1.20.1-2.5.24]
• Winterly [0.9.3+1.20]
• Croptopia Additions [2.0.0]
• Not Enough Crashes [4.4.7+1.20.1]
• Ping Wheel [1.9.1]
• EMI Trades [1.2.1+mc1.20.1]
• Craftify [1.16.0]
• Patchouli [1.20.1-84-FABRIC]
• Model Gap Fix [1.15]
• Create: Compat BetterEnd & BetterNether [1.1]
• Moonlight [1.20-2.13.13]
• EMI Loot [0.7.4+1.20.1+fabric]
• TooFast [1.2.0]
• Continuity [3.0.0-beta.5+1.20.1]
• Better End [4.0.11]
• CraftTweaker [14.0.43]
• Controlling For Fabric [12.0.2]
• Konkrete [1.8.1]
• Gpu memory leak fix mod [1.20.1-1.8]
• AppleSkin [2.5.1+mc1.20]
• Aquamirae [6]
• Way2Way [0.0.6]
• Windchimes [1.2.4+1.20]
• Debugify [1.20.1+2.0]
• Cristel Lib [1.1.5]
• Better Advancements [0.4.2.10]
• Pick Up Notifier [8.0.0]
• Artifacts [9.5.13]
• FTB Essentials [2001.2.2]
• Better Mount HUD [1.2.2]
• Highlighter [1.1.9]
• Cosmetic Armor [1.6.0]
• Mod Menu [7.2.2]
• Shulker Box Tooltip [4.0.4+1.20.1]
• Iceberg [1.1.18]
• NotEnoughAnimations [1.7.6]
• YUNG's Better Desert Temples [1.20-Fabric-3.0.3]
• Custom Entity Attributes (CEA) [1.0.0]
• Ice and Fire: Dragon Finder [1.0.0-1.20.1]
• OptiGUI [2.3.0-beta.6+1.20]
• Capes [1.5.2+1.20]
• lazy-language-loader [0.3.3]
• Ice And Fire [0.6.3]
• Fabric Seasons [2.4.2-BETA+1.20]
• Puzzles Lib [8.1.24]
• Build Guide [0.4.3]
• YUNG's Bridges [1.20-Fabric-4.0.3]
• Botarium [2.3.4]
• Create: Copycats+ [2.1.4+mc.1.20.1-fabric]
• Easy Magic [8.0.1]
• JamLib [0.6.1+1.20.x]
• FTB Ranks [2001.1.3]
• Necronomicon [1.6.0]
• Derelict [1.1.1]
• Jade [11.12.0+fabric]
• No Chat Reports [1.20.1-v2.2.2]
• Resourcefulconfig [2.1.2]
• Elytra Slot [6.4.4+1.20.1]
• Boat Item View Fabric [0.0.5]
• Terralith Andesite Patch [1.0.0]
• Remove Reloading Screen [4.0.6.1+mc1.20.1-fabric]
• Sodium Extra [0.5.4+mc1.20.1-build.115]
• Twigs [3.1.0]
• Sophisticated Backpacks [1.20.1-3.20.11.26]
• Friends&Foes - Beekeeper Hut [2.0.1]
• EMI Enchanting [0.1.2+1.20.1]
• Falling Leaves [1.15.6]
• StackDeobfuscator [1.4.3+08e71cc]
• Tierify [1.2.0]
• Sophisticated Core [1.20.1-0.6.33.31]
• EnchantmentDescriptions [17.1.18]
• EMI [1.1.16+1.20.1+fabric]
• Structory: Towers [1.0.7]
• Indium [1.0.34+mc1.20.1]
• Deeper and Darker [1.3.2.1]
• Fabric Seasons: Terralith Compat [1.0-2.3.7]
• Puzzle [1.5.2+1.20]
• Backported Wolves [1.1.0-1.19.3-1.20.4]
• FPS Reducer [1.20-2.5]
• Iris [1.7.5+mc1.20.1]
• PigPen [15.0.2]
• When Dungeons Arise [2.1.57]
• Better Tridents [8.0.1]
• Fabric API [0.92.2+1.20.1]
• Custom Item Attributes (CIA) [2.0.0]
• Recipe Advancements Nuker [1.20-1.4]
• Friends&Foes - Flowery Mooblooms [2.0.2]
• Resourceful Lib [2.1.29]
• Forge Config API Port [8.0.0]
• FastQuit [3.0.0+1.20+]
• Remove Terralith Intro Message [1.1]
• Double Doors [5.9]
• FTB Teams [2001.3.0]
• Nether Depths Upgrade [fabric-3.1.6-1.20]
• Paginated Advancements [2.3.0]
• Runelic [18.0.2]
• Friends & Foes [3.0.5]
• Bookshelf [20.2.13]
• Block Swap [5.0.0.0]
• YOSBR [0.1.2]
• Dungeon Now Loading [1.5]
• YUNG's Better Strongholds [1.20-Fabric-4.0.3]
• Forge Config Screens [8.0.2]
• Enhanced Block Entities [0.9+1.20]
• Visuality [0.7.1+1.20]
• Zoomify [2.14.0+1.20.1]
• Server Browser [1.1.2]
• Create: Steam 'n' Rails [1.6.4+fabric-mc1.20.1]
• FTB Library [2001.2.4]
• SuperMartijn642's Config Lib [1.1.8+a]
• Better Beds [1.3.0]
• Xaero's Minimap [24.5.0]
• Structory [1.3.5]
• Searchables [1.0.3]
• Supplementaries [1.20-2.8.17]
• e4mc [5.2.1]
• Language Reload [1.6.1+1.20.1]
• Nicer Skies [1.3.0]
• BetterCompatibilityChecker [4.0.1]
• Sodium [0.5.11+mc1.20.1]
• Better Ping Display [1.1.1]
• Swampier Swamps [1.20-4.0.0]
• Right Click Harvest [3.2.3+1.19.x-1.20.1-fabric]
• Clumps [12.0.0.4]
• Waystones [14.1.5]
• Roguelike Dungeons [2.0.4-build4-1.20.1-fabric]
• WaveyCapes [1.4.10]
• Terralith [2.5.4]
• Fabrishot [1.10.1]
• Obscure API [16]
• Better Trim Tooltips [1.0.1]
• Legendary Tooltips [1.4.5]
• AttributeFix [21.0.4]
• Advancement Plaques [1.6.7]
• Faux-Custom-Entity-Data [6.0.1]
• Trinkets [3.7.2]
• Prism [1.0.5]
• Seamless Loading Screen [2.0.3+1.20.1]
• Tiny Skeletons [8.0.1]
• Towns and Towers [1.10.2
  ]
• Things [0.3.3+1.20]
• Block Runner [8.0.4]
• Icarus [2.10.0]
• Blur (Fabric) [3.1.0]
• Create Crafts & Additions [NONE]
• Dungeons and Taverns [3.0.3.f]
• BetterF3 [7.0.2]
• ModernFix [5.19.4+mc1.20.1]
• YUNG's Better Dungeons [1.20-Fabric-4.0.4]
• Essential Dependencies [0]
• Architectury [9.2.14]
• Fabric Seasons: Extras [1.3.2-BETA+1.20]
• Presence Footsteps [1.9.4+1.20.1]
• Leaves Be Gone [8.0.0]
• EntityCulling [1.7.0]
• You're in Grave Danger [2.0.10]
• Thermoo [2.3.2]
• Polymorph [0.49.7+1.20.1]
• Concurrent Chunk Management Engine [0.2.0+alpha.11.13]
• Sophisticated Storage [1.20.1-0.10.44.23]
• Fabric Seasons: Croptopia Compat [1.0-2.2.2]
• Geophilic [3.1.3]
• Entity Texture Features [6.2.5]
• FabricSkyBoxes [0.7.3+mc1.20.1]
• Reese's Sodium Options [1.7.2+mc1.20.1-build.101]
• Better Statistics Screen [3.12.6+fabric-1.20.1]

Code of Conduct

• I agree that if the issue is regarding a crash, I gave the logs and the crash report.
• I agree that I will be available later for any follow-up questions to help diagnose and resolve the issue.

[RokeJulianLockhart]

#142 (comment)

@JaredRichardWilliam can confirm too.

[pokesmells]

Can confirm I am having this issue as well

[TheCSDev]

Hello!
Sorry for the delayed response, as I usually respond sooner.
Now that 1.21.3 ports are out, I'd like to focus on resolving this issue. First off, thank you so much for such a detailed bug report! Very few people put in the effort to try and describe an issue in that much detail.

Now, I'd like to focus on reproducing the issue on my end, so I can find a way to resolve it. To do this, I need to clear up a few issues;

1. Could you please provide information on what "Elemental" is? Apologies for not knowing this already. I tried looking it up, but using the search-term "elemental" is too vague to find meaningful results on Google and other search engines.
2. The link you have provided, https://kim.nl.tab.digital/s/QsmpqSeZnwsQ2BY, is inaccessible to me. I assume this could be a mod-pack or some sort of configs, however I am unable to reach them (Something called "NextCloud" tells me the file is not found).
3. The biggest one so far; Minecraft doesn't log network-related errors, so the log file you have provided has no useful information unfortunately (go figure, something Minecraft should log, isn't coded by Mojang to be logged). Now I understand this isn't an issue on your end, but I am still stating this just so it's known. This network-related error also just so happens to be the main focal point of this issue report, so the best I can do is recreate the issue on my end, given the logs do not have the details I need, and the stack-trace shown on-screen doesn't have enough lines to explain the error's origin.

Once I manage to recreate the issue on my end, it will hopefully help me get closer to the line of code that caused this issue, after which a patch can be made. ((In the meantime, I suppose it'd be a good idea for me to implement (togglable/configurable) network-related error loggers in my mods, if possible.))

Edit:
All edits are typo-corrections.

[RokeJulianLockhart]

Could you please provide information on what "Elemental" is? Apologies for not knowing this already. I tried looking it up, but using the search-term "elemental" is too vague to find meaningful results on Google and other search engines.

Apologies. I meant Essential. Filing bugs at night does things to a brain.

The link you have provided, https://kim.nl.tab.digital/s/QsmpqSeZnwsQ2BY, is inaccessible to me. I assume this could be a mod-pack or some sort of configs, however I am unable to reach them (Something called "NextCloud" tells me the file is not found).

Yeah, that wasn't meant to expire. I didn't upload it, but I'll reupload and provide a permanent URI when @JaredRichardWilliam is available again - it's indeed a modpack, and he created it with prismlauncher-9.0-1.fc40.x86_64.

If you're interested, https://github.com/nextcloud/.github/blob/a7b41dc98d8844b64d9c372c84b4afd68e532f9a/profile/README.md#nextcloud explains that NC is just FOSS filehosting platform software.

The biggest one so far; Minecraft doesn't log network-related errors, so the log file you have provided has no useful information unfortunately (go figure, something Minecraft should log, isn't coded by Mojang to be logged). Now I understand this isn't an issue on your end, but I am still stating this just so it's known.

How do you suggest that I log it? I don't mind filing an issue on MC's Jira to eventually have the work performed in the main client, but they'll probably close it as a suggestion (even if I phrase the absence as a bug). Otherwise, I don't mind trying any of the non-destructive options at this Ask Ubuntu answer revision (like wireshark) or https://superuser.com/revisions/22571/1, but I'm unfamiliar with them.

This network-related error also just so happens to be the main focal point of this issue report, so the best I can do is recreate the issue on my end, given the logs do not have the details I need, and the stack-trace shown on-screen doesn't have enough lines to explain the error's origin.

I'll use debug symbols if you can provide them, but I'm unfamiliar with whether those are necessary for languages like DotNet and Java (considering they use microcode), much less how to install them (considering that gdb's debuginfo shan't install them, and they're not available via any OS's package manager).

[TheCSDev]

Thank you so much for the quick response!

As for

How do you suggest that I log it?

You do not have to do anything regarding the error logging, as I* will be responsible for tracing the error to its origin once I recreate the issue on my end. Actually logging the error would require you to mod the game yourself and program it to do that, which obviously, I do not expect anyone to do (nor should you).

I will now get to reproducing the environment and the issue you have described, after which I'll work on a patch. Hopefully everything goes as planned. Thank you once again, and have a great day!

[RokeJulianLockhart]

#142 (comment)

@TheCSDev, I've reuploaded the pack at https://github.com/user-attachments/files/17524982/Redy.s.Pack.Fabric.zip ¹

Footnotes

1. https://kim.nl.tab.digital/s/rw5oHT3PxjGYQKj ↩

[TheCSDev]

Hello again!
If you do not mind, I have one more question I'd like to ask.

In the latest versions of the game (I used 1.21), I intentionally recreated a scenario where the client would get disconnected due to a network error (by intentionally cutting the server's internet access). To my surprise, I noticed the game is actually logging the error in my case, and it even shows me a button to click on it and view the logs;

I was wondering if something like this takes place on your end, and if the game is leaving any more traces of the error. For me, the game saved an error log file in the [game folder]/debug directory.

And here's the example error log file I was able to find:

---- Minecraft Network Protocol Error Report ----
// I heard pigeons are more reliable

Time: 2024-10-26 13:48:49
Description: Packet handling error

java.net.SocketException: Connection reset
	at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:401)
	at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:434)
	at io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:254)
	at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1132)
	at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:357)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:151)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Now that I have the time to, I will also recreate a modded environment using your mod-pack and using the scenario you have provided, and see if any traces are left by the game in that instance as well.

-

Edit to add (after some time passed):

I have recreated the environment by installing the mod-pack to my client and to a server hosted on a VM. I made attempts to join the server both with and without BSS installed. In both instances, I encountered no issues, even after repeated rejoins.
Note that the modpack you have provided is 1.20.1, so I don't know if that plays a role. Now, I also know you mentioned Essential, however I am unfortunately unable to use it due to not having two purchased Minecraft accounts. Lastly, I will see if it's possible for me to attempt regular LAN sessions using two non-authenticated clients aka ones used in mod development environments (and not onces found in "cracked" launchers).

If nothing works, then this could be some sort of incompatibility with Essential, but I am unfortunately unable to verify or check this. I will also have a deep look at my networking-related code, specifically one dealing with ByteBuf-s, as the error message you have shown does usually originate from mishandling of ByteBuf-s.

[ninjaguardian]

I had this issue on quilt 1.20.1 0.27.0 when joining a single player world, but when I updated to 0.28.0-beta.3 it started to work.

[ninjaguardian]

I had this issue on quilt 1.20.1 0.27.0 when joining a single player world, but when I updated to 0.28.0-beta.3 it started to work.

Never mind. Now the issue is back.

[YELANDAOKONG]

I also encountered this bug in version 1.20.1 with the same error message like this:

[01:16:16] [Netty Server IO #2/ERROR]: Error receiving packet 23
io.netty.util.IllegalReferenceCountException: refCnt: 0
	at io.netty.buffer.AbstractByteBuf.ensureAccessible(AbstractByteBuf.java:1454) ~[netty-buffer-4.1.82.Final.jar:?]
	at io.netty.buffer.AbstractByteBuf.checkIndex(AbstractByteBuf.java:1383) ~[netty-buffer-4.1.82.Final.jar:?]
	at io.netty.buffer.UnpooledHeapByteBuf.copy(UnpooledHeapByteBuf.java:534) ~[netty-buffer-4.1.82.Final.jar:?]
	at io.netty.buffer.AbstractByteBuf.copy(AbstractByteBuf.java:1194) ~[netty-buffer-4.1.82.Final.jar:?]
	at net.minecraft.class_2540.copy(class_2540.java:1628) ~[server-intermediary.jar:?]
	at net.minecraft.class_2540.copy(class_2540.java:1628) ~[server-intermediary.jar:?]
	at net.minecraft.class_2658.method_11052(class_2658.java:55) ~[server-intermediary.jar:?]
	at net.minecraft.class_2545.method_10838(class_2545.java:45) ~[server-intermediary.jar:?]
	at net.minecraft.class_2545.encode(class_2545.java:14) ~[server-intermediary.jar:?]
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:764) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:790) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:758) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:808) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306) ~[netty-transport-4.1.82.Final.jar:?]
	at net.minecraft.class_2535.method_36942(class_2535.java:220) ~[server-intermediary.jar:?]
	at net.minecraft.class_2535.method_10761(class_2535.java:212) ~[server-intermediary.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.82.Final.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.82.Final.jar:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.82.Final.jar:?]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:566) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.82.Final.jar:?]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.82.Final.jar:?]
	at java.lang.Thread.run(Thread.java:1583) ~[?:?]
[01:16:16] [Netty Server IO #2/ERROR]: Exception occurred in netty pipeline
io.netty.handler.codec.EncoderException: io.netty.util.IllegalReferenceCountException: refCnt: 0
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:125) ~[netty-codec-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:764) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:790) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:758) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:808) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306) ~[netty-transport-4.1.82.Final.jar:?]
	at net.minecraft.class_2535.method_36942(class_2535.java:220) ~[server-intermediary.jar:?]
	at net.minecraft.class_2535.method_10761(class_2535.java:212) ~[server-intermediary.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.82.Final.jar:?]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.82.Final.jar:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.82.Final.jar:?]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:566) ~[netty-transport-4.1.82.Final.jar:?]
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.82.Final.jar:?]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.82.Final.jar:?]
	at java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: io.netty.util.IllegalReferenceCountException: refCnt: 0
	at io.netty.buffer.AbstractByteBuf.ensureAccessible(AbstractByteBuf.java:1454) ~[netty-buffer-4.1.82.Final.jar:?]
	at io.netty.buffer.AbstractByteBuf.checkIndex(AbstractByteBuf.java:1383) ~[netty-buffer-4.1.82.Final.jar:?]
	at io.netty.buffer.UnpooledHeapByteBuf.copy(UnpooledHeapByteBuf.java:534) ~[netty-buffer-4.1.82.Final.jar:?]
	at io.netty.buffer.AbstractByteBuf.copy(AbstractByteBuf.java:1194) ~[netty-buffer-4.1.82.Final.jar:?]
	at net.minecraft.class_2540.copy(class_2540.java:1628) ~[server-intermediary.jar:?]
	at net.minecraft.class_2540.copy(class_2540.java:1628) ~[server-intermediary.jar:?]
	at net.minecraft.class_2658.method_11052(class_2658.java:55) ~[server-intermediary.jar:?]
	at net.minecraft.class_2545.method_10838(class_2545.java:45) ~[server-intermediary.jar:?]
	at net.minecraft.class_2545.encode(class_2545.java:14) ~[server-intermediary.jar:?]
	at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.82.Final.jar:?]
	... 21 more

When I disable this Mod on the server, even if the client still loads it, there won't be any issues.