Handler creation fails for method inside isolated classloader

[23:30:25] [Server thread/ERROR] [sponge]: Failed to create handler for DiscoveredMethod{declaringClass=class space.arim.libertybans.env.sponge.command.CommandListener, access=1, methodName='registerCommandEvent', descriptor='(Lorg/spongepowered/api/event/lifecycle/RegisterCommandEvent;)V', signature='(Lorg/spongepowered/api/event/lifecycle/RegisterCommandEvent<Lorg/spongepowered/api/command/Command$Raw;>;)V', parameters=[org.spongepowered.common.event.manager.ListenerClassVisitor$ListenerParameter@39fca0f2], annotations=[org.spongepowered.common.event.manager.ListenerClassVisitor$ListenerAnnotation@31112fdc], listenerAnnotation=org.spongepowered.common.event.manager.ListenerClassVisitor$ListenerMethodVisitor$1@30d31e7e} on class space.arim.libertybans.env.sponge.command.CommandListener
java.lang.IllegalArgumentException: The provided lookup 'space.arim.libertybans.env.sponge.command.CommandListener/space.arim.libertybans.env.sponge.plugin.SpongePlugin' does not have full privilege access required to create a hidden class
	at org.spongepowered.common.event.filter.FilterGenerator.create(FilterGenerator.java:120) ~[FilterGenerator.class:1.18.2-9.0.0-RC1157]
	at org.spongepowered.common.event.manager.ClassEventListenerFactory.createLookup(ClassEventListenerFactory.java:88) ~[ClassEventListenerFactory.class:1.18.2-9.0.0-RC1157]
	at org.spongepowered.common.event.manager.ClassEventListenerFactory.create(ClassEventListenerFactory.java:76) ~[ClassEventListenerFactory.class:1.18.2-9.0.0-RC1157]
	at org.spongepowered.common.event.manager.SpongeEventManager.registerListener(SpongeEventManager.java:257) ~[SpongeEventManager.class:1.18.2-9.0.0-RC1157]
	at org.spongepowered.common.event.manager.SpongeEventManager.registerListeners(SpongeEventManager.java:321) ~[SpongeEventManager.class:1.18.2-9.0.0-RC1157]
	at org.spongepowered.common.event.manager.SpongeEventManager.registerListeners(SpongeEventManager.java:77) ~[SpongeEventManager.class:1.18.2-9.0.0-RC1157]
	at space.arim.libertybans.env.sponge.command.CommandListener.register(CommandListener.java:45) ~[?:?]
	at java.util.ArrayList.forEach(ArrayList.java:1511) ~[?:?]
	at space.arim.libertybans.core.env.EnvironmentManager.startup(EnvironmentManager.java:51) ~[?:?]
	at space.arim.libertybans.core.LifecycleGodfather.startup0(LifecycleGodfather.java:82) ~[?:?]
	at space.arim.libertybans.core.AbstractBaseFoundation.timedEvent(AbstractBaseFoundation.java:127) ~[?:?]
	at space.arim.libertybans.core.AbstractBaseFoundation.startup(AbstractBaseFoundation.java:64) ~[?:?]
	at space.arim.libertybans.env.sponge.plugin.SpongeInitializer.initialize(SpongeInitializer.java:101) ~[SpongeInitializer.class:?]
	at space.arim.libertybans.env.sponge.plugin.SpongePlugin.onStart(SpongePlugin.java:56) ~[SpongePlugin.class:?]
	at org.spongepowered.common.event.manager.RegisteredListener.handle(RegisteredListener.java:88) ~[RegisteredListener.class:1.18.2-9.0.0-RC1157]
	at org.spongepowered.common.event.manager.SpongeEventManager.post(SpongeEventManager.java:383) ~[SpongeEventManager.class:1.18.2-9.0.0-RC1157]
	at org.spongepowered.common.event.manager.SpongeEventManager.post(SpongeEventManager.java:413) ~[SpongeEventManager.class:1.18.2-9.0.0-RC1157]
	at org.spongepowered.common.SpongeLifecycle.callStartedEngineEvent(SpongeLifecycle.java:201) ~[SpongeLifecycle.class:1.18.2-9.0.0-RC1157]
	at net.minecraft.server.dedicated.DedicatedServer.handler$zpg000$vanilla$callStartedEngineAndLoadedGame(DedicatedServer.java:1232) ~[?:?]
	at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:215) ~[?:?]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:670) ~[?:?]
	at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:273) ~[?:?]
	at java.lang.Thread.run(Thread.java:833) [?:?]