I am using Zap hosting not LAN or anything like that.
This is the error that starts upon anouther player joining. There is no error on serverside so im assuming its client side
[08:04:56] [Render thread/ERROR]: Error executing task on Client
java.lang.IllegalStateException: Invalid packet received, aborting connection
at net.minecraftforge.network.NetworkHooks.validatePacketDirection(NetworkHooks.java:92) ~[forge-1.18.2-40.2.0-universal.jar%23127!/:?]
at net.minecraftforge.network.simple.IndexedMessageCodec.consume(IndexedMessageCodec.java:152) ~[forge-1.18.2-40.2.0-universal.jar%23127!/:?]
at net.minecraftforge.network.simple.SimpleChannel.networkEventListener(SimpleChannel.java:72) ~[forge-1.18.2-40.2.0-universal.jar%23127!/:?]
at net.minecraftforge.eventbus.EventBus.doCastFilter(EventBus.java:247) ~[eventbus-5.0.3.jar%232!/:?]
at net.minecraftforge.eventbus.EventBus.lambda$addListener$11(EventBus.java:239) ~[eventbus-5.0.3.jar%232!/:?]
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:302) ~[eventbus-5.0.3.jar%232!/:?]
at net.minecraftforge.eventbus.EventBus.post(EventBus.java:283) ~[eventbus-5.0.3.jar%232!/:?]
at net.minecraftforge.network.NetworkInstance.dispatch(NetworkInstance.java:68) ~[forge-1.18.2-40.2.0-universal.jar%23127!/:?]
at net.minecraftforge.network.NetworkHooks.lambda$onCustomPayload$1(NetworkHooks.java:78) ~[forge-1.18.2-40.2.0-universal.jar%23127!/:?]
at java.util.Optional.map(Optional.java:260) ~[?:?]
at net.minecraftforge.network.NetworkHooks.onCustomPayload(NetworkHooks.java:78) ~[forge-1.18.2-40.2.0-universal.jar%23127!/:?]
at net.minecraft.client.multiplayer.ClientPacketListener.m_7413_(ClientPacketListener.java:1824) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.network.protocol.game.ClientboundCustomPayloadPacket.m_5797_(ClientboundCustomPayloadPacket.java:57) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.network.protocol.game.ClientboundCustomPayloadPacket.m_5797_(ClientboundCustomPayloadPacket.java:7) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.network.protocol.PacketUtils.m_131356_(PacketUtils.java:22) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.util.thread.BlockableEventLoop.m_6367_(BlockableEventLoop.java:157) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.m_6367_(ReentrantBlockableEventLoop.java:23) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.util.thread.BlockableEventLoop.m_7245_(BlockableEventLoop.java:131) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.util.thread.BlockableEventLoop.m_18699_(BlockableEventLoop.java:116) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1015) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:665) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
at net.minecraft.client.main.Main.main(Main.java:205) ~[client-1.18.2-20220404.173914-srg.jar%23122!/:?]
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 net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$launchService$0(CommonClientLaunchHandler.java:31) ~[fmlloader-1.18.2-40.2.0.jar%2317!/:?]
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-9.1.3.jar%235!/:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-9.1.3.jar%235!/:?]
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-9.1.3.jar%235!/:?]
at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) [modlauncher-9.1.3.jar%235!/:?]
at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) [modlauncher-9.1.3.jar%235!/:?]
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-9.1.3.jar%235!/:?]
at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-9.1.3.jar%235!/:?]
at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:149) [bootstraplauncher-1.0.0.jar:?]
[08:04:56] [Render thread/INFO]: JEI StartEventObserver received class net.minecraftforge.client.event.ClientPlayerNetworkEvent$LoggedOutEvent
[08:04:56] [Render thread/INFO]: JEI StartEventObserver transitioning state from JEI_STARTED to DISABLED
[08:04:56] [Render thread/INFO]: Stopping JEI
[08:04:56] [Render thread/INFO]: Removed all colony views
[08:09:22] [Render thread/INFO]: Stopping!
[08:09:22] [Render thread/INFO]: Shutting down map thread