Exceptions when players are connecting/disconnecting on a Non-paper spigot server

[jandie1505]

Are you using the latest version of NoEncryption?

• [X] I am using the latest version of NoEncryption compatible with my server version.

Is there an existing issue for this?

• [X] I have searched the existing issues and have not found a duplicate relating to my issue.

NoEncryption Version

5.1

Minecraft Version

1.19.4

Server Type/Build

This server is running CraftBukkit version 3763-Spigot-7d7b241-5a5e43e (MC: 1.19.4) (Implementing API version 1.19.4-R0.1-SNAPSHOT)

Plugins in Use

Only NoEncryption

Startup/Running Logs

[12:17:39] [User Authenticator #1/INFO]: UUID of player jandie1505 is 55eda3b4-f5bb-4155-8b9b-a16f09c57aa3
[12:17:39] [Server thread/ERROR]: [NoEncryption] An error occurred while retrieving the player's channel for injection!
[12:17:39] [Server thread/ERROR]: Could not pass event PlayerJoinEvent to NoEncryption v5.1
org.bukkit.event.EventException: null
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:589) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:576) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	at net.minecraft.server.players.PlayerList.a(PlayerList.java:301) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.network.LoginListener.a(LoginListener.java:183) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.network.LoginListener.d(LoginListener.java:169) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.network.LoginListener.c(LoginListener.java:75) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.network.NetworkManager.a(NetworkManager.java:279) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.network.ServerConnection.c(ServerConnection.java:175) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1326) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:388) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1200) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1017) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:304) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.lang.RuntimeException: java.lang.IllegalAccessException: class me.doclic.noencryption.compatibility.CompatiblePlayer cannot access a member of class net.minecraft.server.network.PlayerConnection with modifiers "private final"
	at me.doclic.noencryption.PlayerListener.onPlayerJoin(PlayerListener.java:22) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	... 15 more
Caused by: java.lang.IllegalAccessException: class me.doclic.noencryption.compatibility.CompatiblePlayer cannot access a member of class net.minecraft.server.network.PlayerConnection with modifiers "private final"
	at jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:392) ~[?:?]
	at java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:674) ~[?:?]
	at java.lang.reflect.Field.checkAccess(Field.java:1102) ~[?:?]
	at java.lang.reflect.Field.get(Field.java:423) ~[?:?]
	at me.doclic.noencryption.compatibility.CompatiblePlayer.getChannel(CompatiblePlayer.java:29) ~[?:?]
	at me.doclic.noencryption.PlayerListener.onPlayerJoin(PlayerListener.java:19) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	... 15 more
[12:17:39] [Server thread/INFO]: jandie1505 joined the game
[12:17:39] [Server thread/INFO]: jandie1505[/127.0.0.1:42234] logged in with entity id 589 at ([world]-1066.0, 63.0, -215.0)
[12:17:45] [Server thread/INFO]: jandie1505 lost connection: Disconnected
[12:17:45] [Server thread/ERROR]: [NoEncryption] An error occurred while retrieving the player's channel for injection!
[12:17:45] [Server thread/ERROR]: Could not pass event PlayerQuitEvent to NoEncryption v5.1
org.bukkit.event.EventException: null
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:589) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:576) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	at net.minecraft.server.players.PlayerList.remove(PlayerList.java:521) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:1790) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.network.NetworkManager.m(NetworkManager.java:444) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.network.ServerConnection.c(ServerConnection.java:195) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1326) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:388) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1200) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1017) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:304) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.lang.RuntimeException: java.lang.IllegalAccessException: class me.doclic.noencryption.compatibility.CompatiblePlayer cannot access a member of class net.minecraft.server.network.PlayerConnection with modifiers "private final"
	at me.doclic.noencryption.PlayerListener.onPlayerQuit(PlayerListener.java:64) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	... 13 more
Caused by: java.lang.IllegalAccessException: class me.doclic.noencryption.compatibility.CompatiblePlayer cannot access a member of class net.minecraft.server.network.PlayerConnection with modifiers "private final"
	at jdk.internal.reflect.Reflection.newIllegalAccessException(Reflection.java:392) ~[?:?]
	at java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:674) ~[?:?]
	at java.lang.reflect.Field.checkAccess(Field.java:1102) ~[?:?]
	at java.lang.reflect.Field.get(Field.java:423) ~[?:?]
	at me.doclic.noencryption.compatibility.CompatiblePlayer.getChannel(CompatiblePlayer.java:29) ~[?:?]
	at me.doclic.noencryption.PlayerListener.onPlayerQuit(PlayerListener.java:61) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
	at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-api-1.19.4-R0.1-SNAPSHOT.jar:?]
	... 13 more
[12:17:45] [Server thread/INFO]: jandie1505 left the game
[12:17:48] [Craft Scheduler Thread - 2/WARN]: [NoEncryption] Plugin NoEncryption v5.1 generated an exception while executing task 6
java.util.ConcurrentModificationException: null
	at java.util.HashMap.forEach(HashMap.java:1424) ~[?:?]
	at me.doclic.noencryption.utils.ServerChannelGC.runGC(ServerChannelGC.java:18) ~[?:?]
	at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftTask.run(CraftTask.java:82) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at org.bukkit.craftbukkit.v1_19_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:54) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]

Reproducible Test

1. Install NoEncryption on a Spigot 1.19.4 Server (not paper, the bug does not occur on paper).
2. Connect to the server
3. The error will occur
4. Disconnect from the server
5. The error will occur again

Anything else?

No response