Loader constraint violation when using getLinkedPlayer() API method

[AnttiMK]

When using the Floodgate API, if Geyser and Floodgate are both installed on the proxy, the following exception is thrown whenever getLinkedPlayer() is called:

[19:33:24 WARN]: Error dispatching event PostLoginEvent(player=.Kopo942) to listener com.djrapitops.extension.FloodgateBungeeListener@4b8a0d03
java.lang.LinkageError: loader constraint violation: when resolving interface method 'org.geysermc.floodgate.util.LinkedPlayer org.geysermc.floodgate.api.player.FloodgatePlayer.getLinkedPlayer()' the class loader net.md_5.bungee.api.plugin.PluginClassloader @74db12c2 of the current class, com/djrapitops/extension/FloodgateBungeeListener, and the class loader net.md_5.bungee.api.plugin.PluginClassloader @1286528d for the method's defining class, org/geysermc/floodgate/api/player/FloodgatePlayer, have different Class objects for the type org/geysermc/floodgate/util/LinkedPlayer used in the signature (com.djrapitops.extension.FloodgateBungeeListener is in unnamed module of loader net.md_5.bungee.api.plugin.PluginClassloader @74db12c2, parent loader 'app'; org.geysermc.floodgate.api.player.FloodgatePlayer is in unnamed module of loader net.md_5.bungee.api.plugin.PluginClassloader @1286528d, parent loader 'app')
        at com.djrapitops.extension.FloodgateBungeeListener.onLogin(FloodgateBungeeListener.java:62) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:567) ~[?:?]
        at net.md_5.bungee.event.EventHandlerMethod.invoke(EventHandlerMethod.java:19) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at net.md_5.bungee.event.EventBus.post(EventBus.java:48) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at net.md_5.bungee.api.plugin.PluginManager.callEvent(PluginManager.java:466) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at net.md_5.bungee.connection.InitialHandler$6$1.run(InitialHandler.java:549) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:497) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[waterfall-1.17-443.jar:git:Waterfall-Bootstrap:1.17-R0.1-SNAPSHOT:34188b3:443]
        at java.lang.Thread.run(Thread.java:831) [?:?]

As discussed on Discord, this seems to be a known issue. Probably not limited to the LinkedPlayer class, but instead to all classes in the org.geysermc.floodgate.util package.

[Chew]

This should have been fixed with GeyserMC/Geyser@b2619fa, are you not up to date?

[Camotoy]

That commit did not fix that error message. It was ignored as I believe the error belongs in Floodgate. Conversation was had about the issue in #development earlier today.

[vijaypondini]

Is a scheduled fix for this coming soon?
Getting tired of seeing the endless console spam at my proxy lol

[Tim203]

Sorry for the late response. We do plan on fixing this issue in the coming months, but it'll take some time because it's not an easy issue to solve

[albertolarahernandez]

I have the same problem if you need something to testing i can help.

[funniray]

Are there any updates on this?

[Camotoy]

Unfortunately, no. If there are, we will inform here.

[ajh123]

Problem is still here :(

[Simonsator]

The problem still exists with the most recent version

[Tim203]

This should be fixed in the upcoming Floodgate 3.0 update.
I'll keep this open until we're there.

[Tim203]

I'm going to close this issue to mark progress to Floodgate 3.0.
Starting in 3.0 Floodgate will be able to run inside Geyser, meaning that a separate Floodgate plugin is no longer needed for any setup that required both Geyser and Floodgate on the same server. Which also means that this issue will be fixed.