[20:27:32 ERROR]: [MythicMobs] [EVENTS] Exception thrown whilst handling event: org.bukkit.event.player.PlayerQuitEvent
[20:27:32 WARN]: java.lang.ClassCastException: class java.lang.Integer cannot be cast to class net.minecraft.network.NetworkManager (java.lang.Integer is in module java.base of loader 'bootstrap'; net.minecraft.network.NetworkManager is in unnamed module of loader java.net.URLClassLoader @5ce65a89)
[20:27:32 WARN]:        at MythicMobs-5.4.0-SNAPSHOT.jar//io.lumine.mythic.core.volatilecode.v1_20_R2.VolatilePacketHandlerImpl.ejectPlayer(VolatilePacketHandlerImpl.java:67)
[20:27:32 WARN]:        at MythicMobs-5.4.0-SNAPSHOT.jar//io.lumine.mythic.core.volatilecode.v1_20_R2.VolatilePacketHandlerImpl.lambda$new$1(VolatilePacketHandlerImpl.java:43)
[20:27:32 WARN]:        at MythicMobs-5.4.0-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.Delegates$ConsumerToBiConsumerSecond.accept(Delegates.java:144)
[20:27:32 WARN]:        at MythicMobs-5.4.0-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.events.functional.single.EventListener.execute(EventListener.java:131)
[20:27:32 WARN]:        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:77)
[20:27:32 WARN]:        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70)
[20:27:32 WARN]:        at io.papermc.paper.plugin.manager.PaperEventManager.callEvent(PaperEventManager.java:54)
[20:27:32 WARN]:        at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.callEvent(PaperPluginManagerImpl.java:126)
[20:27:32 WARN]:        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:615)
[20:27:32 WARN]:        at net.minecraft.server.players.PlayerList.remove(PlayerList.java:594)
[20:27:32 WARN]:        at net.minecraft.server.players.PlayerList.remove(PlayerList.java:579)
[20:27:32 WARN]:        at net.minecraft.server.network.PlayerConnection.removePlayerFromWorld(PlayerConnection.java:2065)
[20:27:32 WARN]:        at net.minecraft.server.network.PlayerConnection.onDisconnect(PlayerConnection.java:2045)
[20:27:32 WARN]:        at net.minecraft.server.network.PlayerConnection.a(PlayerConnection.java:2032)
[20:27:32 WARN]:        at net.minecraft.network.NetworkManager.p(NetworkManager.java:837)
[20:27:32 WARN]:        at net.minecraft.server.network.ServerConnection.c(ServerConnection.java:260)
[20:27:32 WARN]:        at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1578)
[20:27:32 WARN]:        at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:446)
[20:27:32 WARN]:        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1379)
[20:27:32 WARN]:        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1156)
[20:27:32 WARN]:        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:315)
[20:27:32 WARN]:        at java.base/java.lang.Thread.run(Thread.java:833)