Server Crashes when player generates the Final castle.

[PandaFs23]

Basic details

• Are you using Java 8, 64-bit?: YES
• Did you add any additional mods: NO
• Crash/latest log link (if applicable): Attached - Both Crash reports the server has generated

https://mclo.gs/hR37xEJ - First crash from Final Castle.
https://mclo.gs/zG1AKeX - Second Crash

Describe the issue
Server crashes when user on my SMP generates the final castle. The error on the console shows that "This is a bug - Cannot load color of final castle". We restarted the server after and the server crashed as soon as he joined. I use a the recommended hoster Akliz. Please let me know if there is more info I can provide
A clear description of what the issue is.

[ACGaming]

Known issue, getting fixed in the next modpack update. For now, you can fetch the fixed build of Twilight Forest here: https://github.com/ACGaming/twilightforest/releases/tag/3.11.1023

[xJon]

You can ask Akliz support and they will manually update the mod for you on the server.

[PandaFs23]

Okay, Thank you Xjon and ACGaming. I will reach out to akliz to help fix the issues.
I hope you guys have a good day!

[xJon]

No worries! I'll keep this issue open until the modpack updates, in case anyone else experiences the issue.