Cannot monitor AsyncChatEvent

[Artuto]

Hi, I'm trying to monitor Paper's io.papermc.paper.event.player.AsyncChatEvent but an exception is thrown when the event is called:

[18:18:15 ERROR]: Could not pass event AsyncChatEvent to Chatty v1.2.0-SNAPSHOT
java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
        at io.papermc.paper.event.player.AsyncChatEventMethodAccess.invoke(Unknown Source) ~[?:?]
        at me.jantuck.eventdebugger.EventRemapper.returnCurrentValues(EventRemapper.kt:130) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
        at me.jantuck.eventdebugger.EventRemapper.access$returnCurrentValues(EventRemapper.kt:12) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
        at me.jantuck.eventdebugger.EventRemapper$remapAndSubscribe$2$newExecutor$1.execute(EventRemapper.kt:139) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.17.1.jar:git-Prismarine-21]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:630) ~[patched_1.17.1.jar:git-Prismarine-21]
        at io.papermc.paper.adventure.ChatProcessor.post(ChatProcessor.java:228) ~[patched_1.17.1.jar:git-Prismarine-21]
        at io.papermc.paper.adventure.ChatProcessor.processModern(ChatProcessor.java:139) ~[patched_1.17.1.jar:git-Prismarine-21]
        at io.papermc.paper.adventure.ChatProcessor.lambda$process$1(ChatProcessor.java:68) ~[patched_1.17.1.jar:git-Prismarine-21]
        at io.papermc.paper.adventure.ChatProcessor.processingLegacyFirst(ChatProcessor.java:129) ~[patched_1.17.1.jar:git-Prismarine-21]
        at io.papermc.paper.adventure.ChatProcessor.process(ChatProcessor.java:65) ~[patched_1.17.1.jar:git-Prismarine-21]
        at net.minecraft.server.network.ServerGamePacketListenerImpl.chat(ServerGamePacketListenerImpl.java:2256) ~[app:?]
        at net.minecraft.server.network.ServerGamePacketListenerImpl.handleChat(ServerGamePacketListenerImpl.java:2167) ~[app:?]
        at net.minecraft.server.network.ServerGamePacketListenerImpl.handleChat(ServerGamePacketListenerImpl.java:2133) ~[app:?]
        at net.minecraft.network.protocol.game.ServerboundChatPacket$1.run(ServerboundChatPacket.java:40) ~[app:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[?:?]
        at java.lang.Thread.run(Thread.java:831) ~[?:?]

My config looks like this:

exact:
  AsyncChatEvent:
    class: "io.papermc.paper.event.player.AsyncChatEvent"
    methods:
      - "message"

[JanTuck]

Will check it out within a week, sry it took me so long to respond.

[Bobcat00]

Ha ha, I came here to report the same thing with Paper 1.21.4-177. Same class, same method, same exception.
https://jd.papermc.io/paper/1.21.4/io/papermc/paper/event/player/AbstractChatEvent.html#message()

You should be able to use EssentialsXChat to reproduce this.

I'm also getting some warnings which might be related to Paper's plugin remapping:

2025-02-22 20:50:23 [WARN] [io.papermc.paper.pluginremap.reflect.PaperReflection] Failed to process class bytes
java.lang.IllegalArgumentException: null
	at org.objectweb.asm.ClassReader.readVerificationTypeInfo(ClassReader.java:3424) ~[asm-9.7.1.jar:9.7.1]
	at org.objectweb.asm.ClassReader.readStackMapFrame(ClassReader.java:3351) ~[asm-9.7.1.jar:9.7.1]
	at org.objectweb.asm.ClassReader.readCode(ClassReader.java:2087) ~[asm-9.7.1.jar:9.7.1]
	at org.objectweb.asm.ClassReader.readMethod(ClassReader.java:1512) ~[asm-9.7.1.jar:9.7.1]
	at org.objectweb.asm.ClassReader.accept(ClassReader.java:745) ~[asm-9.7.1.jar:9.7.1]
	at org.objectweb.asm.ClassReader.accept(ClassReader.java:425) ~[asm-9.7.1.jar:9.7.1]
	at io.papermc.paper.pluginremap.reflect.ReflectionRemapper.processClass(ReflectionRemapper.java:51) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at io.papermc.paper.pluginremap.reflect.PaperReflection.processClass(PaperReflection.java:205) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at io.papermc.reflectionrewriter.runtime.DefineClassReflectionProxyImpl.defineClass(DefineClassReflectionProxyImpl.java:72) ~[reflection-rewriter-runtime-0.0.3.jar:?]
	at io.papermc.paper.pluginremap.reflect.PaperReflection.defineClass(PaperReflection.java:179) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at io.papermc.paper.pluginremap.reflect.PaperReflectionHolder.defineClass(Unknown Source) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at EventDebugger-1.1-SNAPSHOT.jar/me.jantuck.eventdebugger.shaded.com.esotericsoftware.reflectasm.AccessClassLoader.defineClass(AccessClassLoader.java:78) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
	at EventDebugger-1.1-SNAPSHOT.jar/me.jantuck.eventdebugger.shaded.com.esotericsoftware.reflectasm.AccessClassLoader.defineAccessClass(AccessClassLoader.java:57) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
	at EventDebugger-1.1-SNAPSHOT.jar/me.jantuck.eventdebugger.shaded.com.esotericsoftware.reflectasm.MethodAccess.get(MethodAccess.java:276) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
	at EventDebugger-1.1-SNAPSHOT.jar/me.jantuck.eventdebugger.EventRemapper.remapAndSubscribe(EventRemapper.kt:75) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
	at EventDebugger-1.1-SNAPSHOT.jar/me.jantuck.eventdebugger.EventDebugger.remapExactSubscriptions(EventDebugger.kt:43) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
	at EventDebugger-1.1-SNAPSHOT.jar/me.jantuck.eventdebugger.EventDebugger.access$remapExactSubscriptions(EventDebugger.kt:12) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
	at EventDebugger-1.1-SNAPSHOT.jar/me.jantuck.eventdebugger.EventDebugger$onEnable$1.run(EventDebugger.kt:29) ~[EventDebugger-1.1-SNAPSHOT.jar:?]
	at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:78) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:474) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1659) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1529) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1251) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:310) ~[paper-1.21.4.jar:1.21.4-177-e5a8ee8]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]