[22:40:09 ERROR]: [ChunkHolderManager] Failed to close entity regionfile cache for world 'em_id_the_cave_1'
java.nio.channels.ClosedChannelException: null
at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:156) ~[?:?]
at sun.nio.ch.FileChannelImpl.force(FileChannelImpl.java:456) ~[?:?]
at net.minecraft.world.level.chunk.storage.RegionFile.close(RegionFile.java:914) ~[paper-1.20.4.jar:git-Paper-496]
at net.minecraft.world.level.chunk.storage.RegionFileStorage.close(RegionFileStorage.java:369) ~[?:?]
at io.papermc.paper.chunk.system.scheduling.ChunkHolderManager.close(ChunkHolderManager.java:195) ~[paper-1.20.4.jar:git-Paper-496]
at net.minecraft.server.level.ServerChunkCache.close(ServerChunkCache.java:454) ~[?:?]
at org.bukkit.craftbukkit.v1_20_R3.CraftServer.unloadWorld(CraftServer.java:1452) ~[paper-1.20.4.jar:git-Paper-496]
at org.bukkit.Bukkit.unloadWorld(Bukkit.java:863) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?]
at com.magmaguy.elitemobs.instanced.dungeons.DungeonInstance$4.run(DungeonInstance.java:237) ~[EliteMobs-8.7.11.jar:?]
at org.bukkit.craftbukkit.v1_20_R3.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.20.4.jar:git-Paper-496]
at org.bukkit.craftbukkit.v1_20_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:482) ~[paper-1.20.4.jar:git-Paper-496]
at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1646) ~[paper-1.20.4.jar:git-Paper-496]
at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:447) ~[paper-1.20.4.jar:git-Paper-496]
at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1525) ~[paper-1.20.4.jar:git-Paper-496]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1226) ~[paper-1.20.4.jar:git-Paper-496]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:319) ~[paper-1.20.4.jar:git-Paper-496]
at java.lang.Thread.run(Thread.java:833) ~[?:?]
[22:40:09 ERROR]: [ChunkHolderManager] Failed to close entity regionfile cache for world 'em_id_the_cave_1' java.nio.channels.ClosedChannelException: null at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:156) ~[?:?] at sun.nio.ch.FileChannelImpl.force(FileChannelImpl.java:456) ~[?:?] at net.minecraft.world.level.chunk.storage.RegionFile.close(RegionFile.java:914) ~[paper-1.20.4.jar:git-Paper-496] at net.minecraft.world.level.chunk.storage.RegionFileStorage.close(RegionFileStorage.java:369) ~[?:?] at io.papermc.paper.chunk.system.scheduling.ChunkHolderManager.close(ChunkHolderManager.java:195) ~[paper-1.20.4.jar:git-Paper-496] at net.minecraft.server.level.ServerChunkCache.close(ServerChunkCache.java:454) ~[?:?] at org.bukkit.craftbukkit.v1_20_R3.CraftServer.unloadWorld(CraftServer.java:1452) ~[paper-1.20.4.jar:git-Paper-496] at org.bukkit.Bukkit.unloadWorld(Bukkit.java:863) ~[paper-api-1.20.4-R0.1-SNAPSHOT.jar:?] at com.magmaguy.elitemobs.instanced.dungeons.DungeonInstance$4.run(DungeonInstance.java:237) ~[EliteMobs-8.7.11.jar:?] at org.bukkit.craftbukkit.v1_20_R3.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.20.4.jar:git-Paper-496] at org.bukkit.craftbukkit.v1_20_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:482) ~[paper-1.20.4.jar:git-Paper-496] at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1646) ~[paper-1.20.4.jar:git-Paper-496] at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:447) ~[paper-1.20.4.jar:git-Paper-496] at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1525) ~[paper-1.20.4.jar:git-Paper-496] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1226) ~[paper-1.20.4.jar:git-Paper-496] at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:319) ~[paper-1.20.4.jar:git-Paper-496] at java.lang.Thread.run(Thread.java:833) ~[?:?]