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This exception has no message.
java.lang.NullPointerException: 	at com.techurify.minecladPlugin.event.player.PlayerJoinListener.onPlayerJoin(PlayerJoinListener.java:56)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:483)	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300)	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501)	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486)	at net.minecraft.server.v1_10_R1.PlayerList.onPlayerJoin(PlayerList.java:317)	at net.minecraft.server.v1_10_R1.PlayerList.a(PlayerList.java:144)	at net.minecraft.server.v1_10_R1.LoginListener.b(LoginListener.java:115)	at net.minecraft.server.v1_10_R1.LoginListener.E_(LoginListener.java:53)	at net.minecraft.server.v1_10_R1.NetworkManager.a(NetworkManager.java:224)	at net.minecraft.server.v1_10_R1.ServerConnection.c(SourceFile:187)	at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:762)	at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:360)	at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:646)	at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:550)	at java.lang.Thread.run(Thread.java:745)