[17:05:54 ERROR]: Could not pass event PlayerJoinEvent to FirstMemoryCore v1.0
java.lang.IllegalArgumentException: Plugin already initialized!
        at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:231) ~[patched_1.16.5.jar:git-Paper-768]
        at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:52) ~[patched_1.16.5.jar:git-Paper-768]
        at firstmemory.FirstmemoryCore.<init>(FirstmemoryCore.kt:12) ~[?:?]
        at firstmemory.event.join.onJoin(join.kt:13) ~[?:?]
        at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor1.execute(Unknown Source) ~[?:?]
        at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.16.5.jar:git-Paper-768]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.16.5.jar:git-Paper-768]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.16.5.jar:git-Paper-768]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:624) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.PlayerList.postChunkLoadJoin(PlayerList.java:356) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.PlayerList.lambda$a$1(PlayerList.java:303) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.PlayerConnection.tick(PlayerConnection.java:316) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.NetworkManager.a(NetworkManager.java:408) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.ServerConnection.c(ServerConnection.java:168) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.MinecraftServer.b(MinecraftServer.java:1515) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:436) ~[patched_1.16.5.jar:git-Paper-768]        at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1342) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1130) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:291) ~[patched_1.16.5.jar:git-Paper-768]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_291]
Caused by: java.lang.IllegalStateException: Initial initialization
        at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:234) ~[patched_1.16.5.jar:git-Paper-768]
        at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:52) ~[patched_1.16.5.jar:git-Paper-768]
        at firstmemory.FirstmemoryCore.<init>(FirstmemoryCore.kt:12) ~[?:?]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_291]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_291]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[?:1.8.0_291]
        at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.8.0_291]
        at java.lang.Class.newInstance(Unknown Source) ~[?:1.8.0_291]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:94) ~[patched_1.16.5.jar:git-Paper-768]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:153) ~[patched_1.16.5.jar:git-Paper-768]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:414) ~[patched_1.16.5.jar:git-Paper-768]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:322) ~[patched_1.16.5.jar:git-Paper-768]
        at org.bukkit.craftbukkit.v1_16_R3.CraftServer.loadPlugins(CraftServer.java:393) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:269) ~[patched_1.16.5.jar:git-Paper-768]
        at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1069) ~[patched_1.16.5.jar:git-Paper-768]