11:47:43 [SEVERE] Could not pass event PLAYER_RESPAWN to GroupSpawn
java.lang.NumberFormatException: null
        at java.lang.Integer.parseInt(Unknown Source)
        at java.lang.Integer.parseInt(Unknown Source)
        at de.Zero9195.GroupSpawn.GroupSpawn.loadLocation(GroupSpawn.java:356)
        at de.Zero9195.GroupSpawn.GSPlayerListener.onPlayerRespawn(GSPlayerListe
ner.java:37)
        at org.bukkit.plugin.java.JavaPluginLoader$3.execute(JavaPluginLoader.ja
va:258)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:58)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:332)
        at net.minecraft.server.ServerConfigurationManager.moveToWorld(ServerCon
figurationManager.java:239)
        at net.minecraft.server.ServerConfigurationManager.moveToWorld(ServerCon
figurationManager.java:204)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:870)
        at net.minecraft.server.Packet9Respawn.a(SourceFile:18)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:85)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:105)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:451)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:361)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
>