I have a mod that is not executing receive packet events when I run 

@SubscribeEvent

public void receivePacket(ReceivePacketEvent event) { 

Nothing will happen. Other events will work like on render or tick event but packet wont work. for reference I'm using this mod in a server

I get an error seemingly randomly that looks like this and im not sure where it comes from or if it affects the packet event so id say im lost

some help would be appreciated 

thankyou!

 

Quote

[01:22:45] [main/FATAL] (Minecraft) Error executing task
 java.util.concurrent.ExecutionException: java.lang.NullPointerException
    at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_351]
    at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_351]
    at net.minecraft.util.Util.runTask(Util.java:43) [Util.class:?]
    at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:987) [Minecraft.class:?]
    at net.minecraft.client.Minecraft.run(Minecraft.java:443) [Minecraft.class:?]
    at net.minecraft.client.main.Main.main(Main.java:111) [Main.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_351]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_351]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_351]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_351]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
    at net.fabricmc.devlaunchinjector.Main.main(Main.java:86) [dev-launch-injector-0.2.1+build.8.jar:?]
Caused by: java.lang.NullPointerException
    at net.minecraft.scoreboard.Scoreboard.removeTeam(Scoreboard.java:240) ~[Scoreboard.class:?]
    at net.minecraft.client.network.NetHandlerPlayClient.handleTeams(NetHandlerPlayClient.java:1452) ~[NetHandlerPlayClient.class:?]
    at net.minecraft.network.play.server.S3EPacketTeams.processPacket(S3EPacketTeams.java:114) ~[S3EPacketTeams.class:?]
    at net.minecraft.network.play.server.S3EPacketTeams.processPacket(S3EPacketTeams.java:36) ~[S3EPacketTeams.class:?]
    at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:24) ~[PacketThreadUtil$1.class:?]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_351]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_351]
    at net.minecraft.util.Util.runTask(Util.java:42) ~[Util.class:?]
    ... 10 more

 

The version you are using is no longer supported on this forum.

Please update to a modern version of Minecraft to receive support.

Currently supported versions are 1.19.3 (Latest) and 1.18.2 (LTS).