[14:50:35 ERROR]: [ProtocolLib] INTERNAL ERROR: Cannot compile structure. Disabing compiler.
If this problem hasn't already been reported, please open a ticket
at https://github.com/dmulloy2/ProtocolLib/issues with the following data:
Stack Trace:
java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @75967f32
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
at com.comphenix.protocol.reflect.compiler.StructureCompiler.generateClass(StructureCompiler.java:299)
at com.comphenix.protocol.reflect.compiler.StructureCompiler.compile(StructureCompiler.java:213)
at com.comphenix.protocol.reflect.compiler.BackgroundCompiler$2.call(BackgroundCompiler.java:204)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at java.base/java.lang.Thread.run(Thread.java:831)
Dump:
Parameters:
com.comphenix.protocol.reflect.StructureModifier@151c7f63[
targetType=class net.minecraft.server.v1_16_R3.NBTTagCompound
target=
converter=
fieldType=interface java.util.Map
data=[public final java.util.Map net.minecraft.server.v1_16_R3.NBTTagCompound.map]
defaultFields={}
subtypeCache={}
customConvertHandling=false
useStructureCompiler=true
]
manager:
com.comphenix.protocol.injector.PacketFilterManager@18871578[
unhookTask=com.comphenix.protocol.injector.DelayedSingleTask@49b17d3d
packetListeners=[PacketAdapter[plugin=Orebfuscator, sending=ListeningWhitelist[priority=NORMAL, packets=[UNLOAD_CHUNK[class=PacketPlayOutUnloadChunk, id=28]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST], com.comphenix.protocol.async.NullPacketListener@1e41bdc6, PacketAdapter[plugin=AuthMe, sending=ListeningWhitelist[priority=NORMAL, packets=[SET_SLOT[class=PacketPlayOutSetSlot, id=21], WINDOW_ITEMS[class=PacketPlayOutWindowItems, id=19]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST], PacketAdapter[plugin=CMI, sending=ListeningWhitelist[priority=HIGH, packets=[UNLOAD_CHUNK[class=PacketPlayOutUnloadChunk, id=28]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST]]
packetInjector=com.comphenix.protocol.injector.netty.ProtocolInjector$5@752bba89
playerInjection=com.comphenix.protocol.injector.netty.ProtocolInjector$4@33a3428
inputBufferedPackets=[]
recievedListeners=com.comphenix.protocol.injector.SortedPacketListenerList@2336dde2
sendingListeners=com.comphenix.protocol.injector.SortedPacketListenerList@612c042c
hasClosed=false
classLoader=PluginClassLoader{plugin=ProtocolLib v4.6.0, pluginEnabled=true, url=plugins\ProtocolLib.jar}
reporter=com.comphenix.protocol.ProtocolLib$1@49fb1572
server=CraftServer{serverName=Paper,serverVersion=git-Paper-735,minecraftVersion=1.16.5}
library=ProtocolLib v4.6.0
asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@1b32e311
knowsServerPackets=true
knowsClientPackets=true
phaseLoginCount=0
phasePlayingCount=5
packetCreation=true
nettyInjector=com.comphenix.protocol.injector.netty.ProtocolInjector@12150a6a
pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@6bb0f054
hasRecycleDistance=true
minecraftVersion=(MC: 1.16.5)
debug=false
]
Sender:
com.comphenix.protocol.reflect.compiler.BackgroundCompiler@70bf8d09[
listeners={com.comphenix.protocol.reflect.compiler.StructureCompiler$StructureKey@17ecaa64=[com.comphenix.protocol.reflect.compiler.BackgroundCompiler$1@744e1e30], com.comphenix.protocol.reflect.compiler.StructureCompiler$StructureKey@accb66d7=[com.comphenix.protocol.reflect.compiler.BackgroundCompiler$1@4eb20c89]}
listenerLock=java.lang.Object@226c775b
compiler=com.comphenix.protocol.reflect.compiler.StructureCompiler@2eb761da
enabled=false
shuttingDown=false
executor=java.util.concurrent.Executors$FinalizableDelegatedExecutorService@2a0c45a2
reporter=com.comphenix.protocol.ProtocolLib$1@49fb1572
unknownPermGenBean=java.lang.Object@7484d22e
permGenBean=
disablePermGenFraction=0.65
]
Version:
ProtocolLib v4.6.0
Java Version:
16.0.1
Server:
git-Paper-735 (MC: 1.16.5)

Duplicate of #1162

This issue was resolved in build 499+.