09:16:07 [SCHWERWIEGEND] null
org.bukkit.command.CommandException: Unhandled exception executing command 'qjoin' in plugin Quarantine v0.3
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:165)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:378)
        at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:757)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:722)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:715)
        at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:180)
        at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:93)
        at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:550)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:527)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)
Caused by: java.lang.IllegalArgumentException: n must be positive
        at java.util.Random.nextInt(Random.java:265)
        at me.DDoS.Quarantine.zone.QSubZone.spawnMobs(QSubZone.java:75)
        at me.DDoS.Quarantine.zone.QSubZone.spawnStartingMobs(QSubZone.java:59)
        at me.DDoS.Quarantine.zone.QZone.spawnStartingMobs(QZone.java:665)
        at me.DDoS.Quarantine.zone.QZone.joinPlayer(QZone.java:545)
        at me.DDoS.Quarantine.Quarantine.onCommand(Quarantine.java:227)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
        ... 14 more