---- Minecraft Crash Report ----
// Shall we play a game?

Time: 14.04.20 18:21
Description: Watching Server

java.lang.Error
	at com.google.common.collect.HashBiMap.seekByValue(HashBiMap.java:235)
	at com.google.common.collect.HashBiMap.access$400(HashBiMap.java:58)
	at com.google.common.collect.HashBiMap$Inverse.get(HashBiMap.java:573)
	at fx.b(SourceFile:56)
	at fo.b(SourceFile:36)
	at kf.a(SourceFile:248)
	at cam$$Lambda$2233/6464500.apply(Unknown Source)
	at caj.b(SourceFile:98)
	at cas.a(SourceFile:221)
	at cax.a(SourceFile:261)
	at wp.a(SourceFile:705)
	at wp.e(SourceFile:380)
	at wp$$Lambda$3030/27364236.accept(Unknown Source)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(Unknown Source)
	at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
	at java.util.Iterator.forEachRemaining(Unknown Source)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Unknown Source)
	at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source)
	at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
	at java.util.stream.ReferencePipeline.forEach(Unknown Source)
	at wp.a(SourceFile:377)
	at xb.a(SourceFile:324)
	at xd.a(SourceFile:756)
	at net.minecraft.server.MinecraftServer.a(SourceFile:552)
	at net.minecraft.server.MinecraftServer.a(SourceFile:812)
	at net.minecraft.server.MinecraftServer.run(SourceFile:655)
	at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server Watchdog
Stacktrace:
	at com.google.common.collect.HashBiMap.seekByValue(HashBiMap.java:235)
	at com.google.common.collect.HashBiMap.access$400(HashBiMap.java:58)
	at com.google.common.collect.HashBiMap$Inverse.get(HashBiMap.java:573)
	at fx.b(SourceFile:56)
	at fo.b(SourceFile:36)
	at kf.a(SourceFile:248)
	at cam$$Lambda$2233/6464500.apply(Unknown Source)
	at caj.b(SourceFile:98)
	at cas.a(SourceFile:221)
	at cax.a(SourceFile:261)
	at wp.a(SourceFile:705)
	at wp.e(SourceFile:380)
	at wp$$Lambda$3030/27364236.accept(Unknown Source)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(Unknown Source)
	at java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)
	at java.util.Iterator.forEachRemaining(Unknown Source)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Unknown Source)
	at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source)
	at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
	at java.util.stream.ReferencePipeline.forEach(Unknown Source)
	at wp.a(SourceFile:377)
	at xb.a(SourceFile:324)
	at xd.a(SourceFile:756)
	at net.minecraft.server.MinecraftServer.a(SourceFile:552)
	at net.minecraft.server.MinecraftServer.a(SourceFile:812)

-- Thread Dump --
Details:
	Threads: "Netty Server IO #7" Id=384 RUNNABLE
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
	-  locked io.netty.channel.nio.SelectedSelectionKeySet@1c3a231
	-  locked java.util.Collections$UnmodifiableSet@1045bf9
	-  locked sun.nio.ch.WindowsSelectorImpl@13bc941
	at sun.nio.ch.SelectorImpl.select(Unknown Source)
	at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
	at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756)
	...


"Netty Server IO #6" Id=383 RUNNABLE
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
	-  locked io.netty.channel.nio.SelectedSelectionKeySet@3951c2
	-  locked java.util.Collections$UnmodifiableSet@cbb79e
	-  locked sun.nio.ch.WindowsSelectorImpl@181e5ad
	at sun.nio.ch.SelectorImpl.select(Unknown Source)
	at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
	at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756)
	...


"Netty Server IO #5" Id=296 RUNNABLE
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
	-  locked io.netty.channel.nio.SelectedSelectionKeySet@995d5d
	-  locked java.util.Collections$UnmodifiableSet@16ae8d
	-  locked sun.nio.ch.WindowsSelectorImpl@1ee9c16
	at sun.nio.ch.SelectorImpl.select(Unknown Source)
	at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
	at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756)
	...


"Netty Server IO #4" Id=293 RUNNABLE
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
	-  locked io.netty.channel.nio.SelectedSelectionKeySet@10eae8b
	-  locked java.util.Collections$UnmodifiableSet@19d7242
	-  locked sun.nio.ch.WindowsSelectorImpl@58d03a
	at sun.nio.ch.SelectorImpl.select(Unknown Source)
	at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
	at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756)
	...


"Netty Server IO #3" Id=101 RUNNABLE
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
	-  locked io.netty.channel.nio.SelectedSelectionKeySet@1bfe0cb
	-  locked java.util.Collections$UnmodifiableSet@1616341
	-  locked sun.nio.ch.WindowsSelectorImpl@1b4150d
	at sun.nio.ch.SelectorImpl.select(Unknown Source)
	at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
	at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756)
	...


"Netty Server IO #2" Id=100 RUNNABLE
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
	-  locked io.netty.channel.nio.SelectedSelectionKeySet@13dcc01
	-  locked java.util.Collections$UnmodifiableSet@104c755
	-  locked sun.nio.ch.WindowsSelectorImpl@1afcd5f
	at sun.nio.ch.SelectorImpl.select(Unknown Source)
	at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
	at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756)
	...


"Netty Server IO #1" Id=38 RUNNABLE
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
	-  locked io.netty.channel.nio.SelectedSelectionKeySet@12ac1a
	-  locked java.util.Collections$UnmodifiableSet@1f021dd
	-  locked sun.nio.ch.WindowsSelectorImpl@397319
	at sun.nio.ch.SelectorImpl.select(Unknown Source)
	at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
	at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756)
	...


"Server Watchdog" Id=37 RUNNABLE
	at sun.management.ThreadImpl.dumpThreads0(Native Method)
	at sun.management.ThreadImpl.dumpAllThreads(Unknown Source)
	at wg.run(SourceFile:45)
	at java.lang.Thread.run(Unknown Source)


"poi IO worker" Id=36 WAITING on java.lang.String@1839e74
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.lang.String@1839e74
	at java.util.concurrent.locks.LockSupport.park(Unknown Source)
	at caz.c(SourceFile:124)
	at caz.d(SourceFile:134)
	at caz$$Lambda$2147/12880455.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"chunk IO worker" Id=35 WAITING on java.lang.String@1839e74
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.lang.String@1839e74
	at java.util.concurrent.locks.LockSupport.park(Unknown Source)
	at caz.c(SourceFile:124)
	at caz.d(SourceFile:134)
	at caz$$Lambda$2147/12880455.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"poi IO worker" Id=34 WAITING on java.lang.String@1839e74
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.lang.String@1839e74
	at java.util.concurrent.locks.LockSupport.park(Unknown Source)
	at caz.c(SourceFile:124)
	at caz.d(SourceFile:134)
	at caz$$Lambda$2147/12880455.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"chunk IO worker" Id=33 WAITING on java.lang.String@1839e74
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.lang.String@1839e74
	at java.util.concurrent.locks.LockSupport.park(Unknown Source)
	at caz.c(SourceFile:124)
	at caz.d(SourceFile:134)
	at caz$$Lambda$2147/12880455.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"poi IO worker" Id=32 WAITING on java.lang.String@1839e74
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.lang.String@1839e74
	at java.util.concurrent.locks.LockSupport.park(Unknown Source)
	at caz.c(SourceFile:124)
	at caz.d(SourceFile:134)
	at caz$$Lambda$2147/12880455.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"chunk IO worker" Id=31 WAITING on java.lang.String@1839e74
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.lang.String@1839e74
	at java.util.concurrent.locks.LockSupport.park(Unknown Source)
	at caz.c(SourceFile:124)
	at caz.d(SourceFile:134)
	at caz$$Lambda$2147/12880455.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"Netty Server IO #0" Id=30 RUNNABLE
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
	at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
	-  locked io.netty.channel.nio.SelectedSelectionKeySet@c482e2
	-  locked java.util.Collections$UnmodifiableSet@a4a1ae
	-  locked sun.nio.ch.WindowsSelectorImpl@126bc98
	at sun.nio.ch.SelectorImpl.select(Unknown Source)
	at io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62)
	at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:756)
	...


"ObjectCleanerThread" Id=29 TIMED_WAITING on java.lang.ref.ReferenceQueue$Lock@ddf136
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.ReferenceQueue$Lock@ddf136
	at java.lang.ref.ReferenceQueue.remove(Unknown Source)
	at io.netty.util.internal.ObjectCleaner$1.run(ObjectCleaner.java:54)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Unknown Source)


"D3D Screen Updater" Id=28 TIMED_WAITING on java.lang.Object@88a2dd
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.Object@88a2dd
	at sun.java2d.d3d.D3DScreenUpdateManager.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"DestroyJavaVM" Id=27 RUNNABLE


"Server console handler" Id=25 RUNNABLE (in native)
	at java.io.FileInputStream.readBytes(Native Method)
	at java.io.FileInputStream.read(Unknown Source)
	at java.io.BufferedInputStream.read1(Unknown Source)
	at java.io.BufferedInputStream.read(Unknown Source)
	-  locked java.io.BufferedInputStream@138d8f3
	at sun.nio.cs.StreamDecoder.readBytes(Unknown Source)
	at sun.nio.cs.StreamDecoder.implRead(Unknown Source)
	at sun.nio.cs.StreamDecoder.read(Unknown Source)
	-  locked java.io.InputStreamReader@1d06770
	at java.io.InputStreamReader.read(Unknown Source)
	...


"Server thread" Id=15 RUNNABLE
	at com.google.common.collect.HashBiMap.seekByValue(HashBiMap.java:235)
	at com.google.common.collect.HashBiMap.access$400(HashBiMap.java:58)
	at com.google.common.collect.HashBiMap$Inverse.get(HashBiMap.java:573)
	at fx.b(SourceFile:56)
	at fo.b(SourceFile:36)
	at kf.a(SourceFile:248)
	at cam$$Lambda$2233/6464500.apply(Unknown Source)
	at caj.b(SourceFile:98)
	...

	Number of locked synchronizers = 1
	- java.util.concurrent.locks.ReentrantLock$NonfairSync@ff763d


"Thread-3" Id=22 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@136a9f5
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@136a9f5
	at java.util.concurrent.locks.LockSupport.park(Unknown Source)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
	at java.util.concurrent.LinkedBlockingQueue.take(Unknown Source)
	at com.mojang.util.QueueLogAppender.getNextLogEvent(QueueLogAppender.java:77)
	at wj.a(SourceFile:137)
	at wj$$Lambda$1964/33498235.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"TimerQueue" Id=23 TIMED_WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@4d0377
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@4d0377
	at java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source)
	at java.util.concurrent.DelayQueue.take(Unknown Source)
	at javax.swing.TimerQueue.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

	Number of locked synchronizers = 1
	- java.util.concurrent.locks.ReentrantLock$NonfairSync@417e0


"AWT-EventQueue-0" Id=21 RUNNABLE
	at com.sun.java.swing.plaf.windows.XPStyle$Skin.equals(Unknown Source)
	at sun.swing.ImageCache$Entry.equals(Unknown Source)
	at sun.swing.ImageCache.getEntry(Unknown Source)
	at sun.swing.ImageCache.getImage(Unknown Source)
	at sun.swing.CachedPainter.paint0(Unknown Source)
	at sun.swing.CachedPainter.paint(Unknown Source)
	-  locked java.lang.Class@1a2df9d
	at com.sun.java.swing.plaf.windows.XPStyle$Skin.paintSkinRaw(Unknown Source)
	at com.sun.java.swing.plaf.windows.AnimationController.paintSkin(Unknown Source)
	-  locked com.sun.java.swing.plaf.windows.AnimationController@163bf1d
	...


"AWT-Windows" Id=19 RUNNABLE
	at sun.awt.windows.WToolkit.eventLoop(Native Method)
	at sun.awt.windows.WToolkit.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"AWT-Shutdown" Id=18 WAITING on java.lang.Object@164e22d
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.Object@164e22d
	at java.lang.Object.wait(Unknown Source)
	at sun.awt.AWTAutoShutdown.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"Java2D Disposer" Id=17 WAITING on java.lang.ref.ReferenceQueue$Lock@ef99ab
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.ReferenceQueue$Lock@ef99ab
	at java.lang.ref.ReferenceQueue.remove(Unknown Source)
	at java.lang.ref.ReferenceQueue.remove(Unknown Source)
	at sun.java2d.Disposer.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)


"Server Infinisleeper" Id=16 TIMED_WAITING
	at java.lang.Thread.sleep(Native Method)
	at wd$1.run(SourceFile:94)


"Snooper Timer" Id=14 WAITING on java.util.TaskQueue@125d7c
	at java.lang.Object.wait(Native Method)
	-  waiting on java.util.TaskQueue@125d7c
	at java.lang.Object.wait(Unknown Source)
	at java.util.TimerThread.mainLoop(Unknown Source)
	at java.util.TimerThread.run(Unknown Source)


"Attach Listener" Id=5 RUNNABLE


"Signal Dispatcher" Id=4 RUNNABLE


"Finalizer" Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@195a994
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.ReferenceQueue$Lock@195a994
	at java.lang.ref.ReferenceQueue.remove(Unknown Source)
	at java.lang.ref.ReferenceQueue.remove(Unknown Source)
	at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)


"Reference Handler" Id=2 WAITING on java.lang.ref.Reference$Lock@1565901
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.Reference$Lock@1565901
	at java.lang.Object.wait(Unknown Source)
	at java.lang.ref.Reference.tryHandlePending(Unknown Source)
	at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)



Stacktrace:
	at wg.run(SourceFile:61)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.15.2
	Minecraft Version ID: 1.15.2
	Operating System: Windows 10 (x86) version 10.0
	Java Version: 1.8.0_241, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 461226752 bytes (439 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
	CPUs: 4
	JVM Flags: 2 total; -Xmx1024M -Xms1024M
	Player Count: 0 / 20; []
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)