---- Minecraft Crash Report ----
// Don't do that.

Time: 2/4/22 9:27 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: com/github/alexthe666/rats/server/entity/EntityRat$3
at com.github.alexthe666.rats.server.entity.EntityRat.openGUI(EntityRat.java:2065) ~[rats:7.1.1] {re:classloading,pl:runtimedistcleaner:A}
at com.github.alexthe666.rats.server.entity.EntityRat.func_230254_b_(EntityRat.java:2436) ~[rats:7.1.1] {re:classloading,pl:runtimedistcleaner:A}
at net.minecraft.entity.MobEntity.func_184230_a(MobEntity.java:1049) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:buzzier_bees.mixins.json:MobEntityMixin,pl:mixin:APP:assets/botania/botania.mixins.json:AccessorMobEntity,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.entity.player.PlayerEntity.func_190775_a(PlayerEntity.java:940) ~[?:?] {re:computing_frames,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:PlayerEntityMixin,pl:mixin:APP:resourcefulbees.mixins.json:MixinPlayerEntity,pl:mixin:APP:ars_nouveau.mixins.json:ElytraPlayerMixin,pl:mixin:APP:endergetic.mixins.json:PlayerEntityMixin,pl:mixin:APP:balancedenchanting.mixins.json:PlayerEntityMixin,pl:mixin:APP:assets/botania/botania.mixins.json:MixinPlayerEntity,pl:mixin:APP:kubejs-common.mixins.json:PlayerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.network.play.ServerPlayNetHandler.func_147340_a(ServerPlayNetHandler.java:1194) ~[?:?] {re:mixin,pl:accesstransformer:B,xf:fml:astralsorcery:reach_set_server_entity_interact,xf:fml:astralsorcery:allow_entity_interaction,xf:fml:hammerlib:coremodone,re:classloading,pl:accesstransformer:B,xf:fml:astralsorcery:reach_set_server_entity_interact,xf:fml:astralsorcery:allow_entity_interaction,xf:fml:hammerlib:coremodone,pl:mixin:A}
at net.minecraft.network.play.client.CUseEntityPacket.func_148833_a(SourceFile:74) ~[?:?] {re:classloading}
at net.minecraft.network.play.client.CUseEntityPacket.func_148833_a(SourceFile:13) ~[?:?] {re:classloading}
at net.minecraft.network.PacketThreadUtil.func_225383_a(SourceFile:21) ~[?:?] {re:mixin,re:classloading}
at net.minecraft.util.concurrent.TickDelayedTask.run(SourceFile:18) ~[?:?] {re:classloading}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) ~[?:?] {re:mixin,re:computing_frames,re:classloading}
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:734) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:159) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.server.MinecraftServer.func_213205_aW(MinecraftServer.java:717) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_213168_p(MinecraftServer.java:711) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213161_c(SourceFile:127) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.server.MinecraftServer.func_213202_o(MinecraftServer.java:697) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:646) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_311] {}
Caused by: java.lang.ClassNotFoundException: com.github.alexthe666.rats.server.entity.EntityRat$3
at java.lang.ClassLoader.findClass(ClassLoader.java:523) ~[?:1.8.0_311] {}
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_311] {}
at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:106) ~[modlauncher-8.0.9.jar:?] {re:classloading}
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_311] {}
... 21 more
Suppressed: java.lang.ClassNotFoundException: Failed to find class bytes for com.github.alexthe666.rats.server.entity.EntityRat$3
at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:260) ~[modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136) ~[modlauncher-8.0.9.jar:?] {re:classloading}
at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98) ~[modlauncher-8.0.9.jar:?] {re:classloading}
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_311] {}
at com.github.alexthe666.rats.server.entity.EntityRat.openGUI(EntityRat.java:2065) ~[rats:7.1.1] {re:classloading,pl:runtimedistcleaner:A}
at com.github.alexthe666.rats.server.entity.EntityRat.func_230254_b_(EntityRat.java:2436) ~[rats:7.1.1] {re:classloading,pl:runtimedistcleaner:A}
at net.minecraft.entity.MobEntity.func_184230_a(MobEntity.java:1049) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:buzzier_bees.mixins.json:MobEntityMixin,pl:mixin:APP:assets/botania/botania.mixins.json:AccessorMobEntity,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.entity.player.PlayerEntity.func_190775_a(PlayerEntity.java:940) ~[?:?] {re:computing_frames,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:PlayerEntityMixin,pl:mixin:APP:resourcefulbees.mixins.json:MixinPlayerEntity,pl:mixin:APP:ars_nouveau.mixins.json:ElytraPlayerMixin,pl:mixin:APP:endergetic.mixins.json:PlayerEntityMixin,pl:mixin:APP:balancedenchanting.mixins.json:PlayerEntityMixin,pl:mixin:APP:assets/botania/botania.mixins.json:MixinPlayerEntity,pl:mixin:APP:kubejs-common.mixins.json:PlayerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.network.play.ServerPlayNetHandler.func_147340_a(ServerPlayNetHandler.java:1194) ~[?:?] {re:mixin,pl:accesstransformer:B,xf:fml:astralsorcery:reach_set_server_entity_interact,xf:fml:astralsorcery:allow_entity_interaction,xf:fml:hammerlib:coremodone,re:classloading,pl:accesstransformer:B,xf:fml:astralsorcery:reach_set_server_entity_interact,xf:fml:astralsorcery:allow_entity_interaction,xf:fml:hammerlib:coremodone,pl:mixin:A}
at net.minecraft.network.play.client.CUseEntityPacket.func_148833_a(SourceFile:74) ~[?:?] {re:classloading}
at net.minecraft.network.play.client.CUseEntityPacket.func_148833_a(SourceFile:13) ~[?:?] {re:classloading}
at net.minecraft.network.PacketThreadUtil.func_225383_a(SourceFile:21) ~[?:?] {re:mixin,re:classloading}
at net.minecraft.util.concurrent.TickDelayedTask.run(SourceFile:18) ~[?:?] {re:classloading}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) ~[?:?] {re:mixin,re:computing_frames,re:classloading}
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:734) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_213166_h(MinecraftServer.java:159) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.server.MinecraftServer.func_213205_aW(MinecraftServer.java:717) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_213168_p(MinecraftServer.java:711) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213161_c(SourceFile:127) ~[?:?] {re:mixin,pl:accesstransformer:B,re:computing_frames,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B}
at net.minecraft.server.MinecraftServer.func_213202_o(MinecraftServer.java:697) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:646) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterendforge.mixins.json:MinecraftServerMixin,pl:mixin:APP:structure_gel.mixins.json:MinecraftServerMixin,pl:mixin:APP:byg.mixins.json:server.MixinMinecraftServer,pl:mixin:APP:resourcefulbees.mixins.json:MixinMinecraftServer,pl:mixin:APP:kubejs-common.mixins.json:MinecraftServerMixin,pl:mixin:A,pl:runtimedistcleaner:A}
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_311] {}
Caused by: java.nio.channels.ClosedChannelException
at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:110) ~[?:1.8.0_311] {}
at sun.nio.ch.FileChannelImpl.position(FileChannelImpl.java:276) ~[?:1.8.0_311] {}
at sun.nio.ch.FileChannelImpl.position(FileChannelImpl.java:50) ~[?:1.8.0_311] {}
at com.sun.nio.zipfs.ZipFileSystem.readFullyAt(ZipFileSystem.java:952) ~[zipfs.jar:1.8.0_311] {}
at com.sun.nio.zipfs.ZipFileSystem.readFullyAt(ZipFileSystem.java:945) ~[zipfs.jar:1.8.0_311] {}
at com.sun.nio.zipfs.ZipFileSystem.getDataPos(ZipFileSystem.java:931) ~[zipfs.jar:1.8.0_311] {}
at com.sun.nio.zipfs.ZipFileSystem.access$400(ZipFileSystem.java:80) ~[zipfs.jar:1.8.0_311] {}
at com.sun.nio.zipfs.ZipFileSystem$EntryInputStream.(ZipFileSystem.java:1500) ~[zipfs.jar:1.8.0_311] {}
at com.sun.nio.zipfs.ZipFileSystem.getInputStream(ZipFileSystem.java:1430) ~[zipfs.jar:1.8.0_311] {}
at com.sun.nio.zipfs.ZipFileSystem.newInputStream(ZipFileSystem.java:547) ~[zipfs.jar:1.8.0_311] {}
at com.sun.nio.zipfs.ZipPath.newInputStream(ZipPath.java:708) ~[zipfs.jar:1.8.0_311] {}
at com.sun.nio.zipfs.ZipFileSystemProvider.newInputStream(ZipFileSystemProvider.java:278) ~[zipfs.jar:1.8.0_311] {}
at java.nio.file.Files.newInputStream(Files.java:152) ~[?:1.8.0_311] {}
at net.minecraftforge.fml.loading.ModJarURLHandler$ModJarURLConnection.getInputStream(ModJarURLHandler.java:87) ~[CF_RagnamodVI_6.1.5.jar:36.2] {}
at cpw.mods.modlauncher.TransformingClassLoader$AutoURLConnection.(TransformingClassLoader.java:174) ~[modlauncher-8.0.9.jar:?] {}
at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:247) ~[modlauncher-8.0.9.jar:?] {}
... 24 more

I am having the same issue.

NoSuchMethodError and ClassDefNotFoundError errors are something I havent been able to reproduce. These methods should exist, especially when it comes to AI tasks, so theres definitely something else going on here. Closing as this is something I cant exactly deal with without more context