Could not pass event AsyncPlayerChatEvent to KGChat v1.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[Silnik.jar:git-PaperSpigot-"4c7641d"]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:74) ~[Silnik.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[Silnik.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [Silnik.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:499) [Silnik.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerConnection.chat(PlayerConnection.java:1111) [Silnik.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1026) [Silnik.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat$1.run(PacketPlayInChat.java:39) [Silnik.jar:git-PaperSpigot-"4c7641d"]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_171]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_171]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_171]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_171]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_171]
Caused by: java.lang.NoClassDefFoundError: me/kgaz/exp/KGExp
        at me.kgaz.chat.Main.onChat(Main.java:54) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_171]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_171]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[Silnik.jar:git-PaperSpigot-"4c7641d"]
        ... 12 more