how can i fix this, please help.. i'm new on hosting a server and idk what to do

[Hoodyie]

how do i fix this error

[17:05:48] [Server thread/ERROR]: Could not pass event PlayerInteractEvent to LockettePro v2.10.8

135 | java.lang.NullPointerException: null
136 | at org.bukkit.craftbukkit.v1_16_R3.block.CraftSign.applyTo(CraftSign.java:79) ~[minecraft_server.jar:git-Paper-356]
137 | at org.bukkit.craftbukkit.v1_16_R3.block.CraftSign.applyTo(CraftSign.java:13) ~[minecraft_server.jar:git-Paper-356]
138 | at org.bukkit.craftbukkit.v1_16_R3.block.CraftBlockEntityState.update(CraftBlockEntityState.java:147) ~[minecraft_server.jar:git-Paper-356]
139 | at org.bukkit.craftbukkit.v1_16_R3.block.CraftBlockState.update(CraftBlockState.java:167) ~[minecraft_server.jar:git-Paper-356]
140 | at org.bukkit.craftbukkit.v1_16_R3.block.CraftBlockState.update(CraftBlockState.java:162) ~[minecraft_server.jar:git-Paper-356]
141 | at me.crafter.mc.lockettepro.Utils.updateSign(Utils.java:85) ~[?:?]
142 | at me.crafter.mc.lockettepro.Utils.putSignOn(Utils.java:57) ~[?:?]
143 | at me.crafter.mc.lockettepro.BlockPlayerListener.onPlayerQuickLockChest(BlockPlayerListener.java:73) ~[?:?]
144 | at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor88.execute(Unknown Source) ~[?:?]
145 | at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[minecraft_server.jar:git-Paper-356]
146 | at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[minecraft_server.jar:git-Paper-356]
147 | at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[minecraft_server.jar:git-Paper-356]
148 | at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:607) ~[minecraft_server.jar:git-Paper-356]
149 | at org.bukkit.craftbukkit.v1_16_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:505) ~[minecraft_server.jar:git-Paper-356]
150 | at net.minecraft.server.v1_16_R3.PlayerInteractManager.a(PlayerInteractManager.java:464) ~[minecraft_server.jar:git-Paper-356]
151 | at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1549) ~[minecraft_server.jar:git-Paper-356]
152 | at net.minecraft.server.v1_16_R3.PacketPlayInUseItem.a(PacketPlayInUseItem.java:27) ~[minecraft_server.jar:git-Paper-356]
153 | at net.minecraft.server.v1_16_R3.PacketPlayInUseItem.a(PacketPlayInUseItem.java:5) ~[minecraft_server.jar:git-Paper-356]
154 | at net.minecraft.server.v1_16_R3.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:23) ~[minecraft_server.jar:git-Paper-356]
155 | at net.minecraft.server.v1_16_R3.TickTask.run(SourceFile:18) ~[minecraft_server.jar:git-Paper-356]
156 | at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[minecraft_server.jar:git-Paper-356]
157 | at net.minecraft.server.v1_16_R3.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[minecraft_server.jar:git-Paper-356]
158 | at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[minecraft_server.jar:git-Paper-356]
159 | at net.minecraft.server.v1_16_R3.MinecraftServer.bb(MinecraftServer.java:1133) ~[minecraft_server.jar:git-Paper-356]
160 | at net.minecraft.server.v1_16_R3.MinecraftServer.executeNext(MinecraftServer.java:1126) ~[minecraft_server.jar:git-Paper-356]
161 | at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119) ~[minecraft_server.jar:git-Paper-356]
162 | at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1200) ~[minecraft_server.jar:git-Paper-356]
163 | at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:997) ~[minecraft_server.jar:git-Paper-356]
164 | at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:178) ~[minecraft_server.jar:git-Paper-356]
165 | at java.lang.Thread.run(Thread.java:834) [?:?]

[samfces]

Same issue at Paper 1.16.4 (build 356)

[JustJP2K]

Yep can confirm. having the same problem