2018-12-14 18:37:25 [SEVERE] Could not pass event PlayerJoinEvent to MaxBansFix v1.0
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:445)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:67)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:479)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:464)
	at net.minecraft.server.management.ServerConfigurationManager.func_72377_c(ServerConfigurationManager.java:327)
	at net.minecraft.server.management.ServerConfigurationManager.func_72355_a(ServerConfigurationManager.java:188)
	at net.minecraft.network.NetLoginHandler.completeConnection(NetLoginHandler.java:223)
	at cpw.mods.fml.common.network.FMLNetworkHandler.handleClientConnection(FMLNetworkHandler.java:168)
	at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionReceivedFromClient(FMLNetworkHandler.java:121)
	at net.minecraft.network.NetLoginHandler.func_72529_d(NetLoginHandler.java:198)
	at net.minecraft.network.NetLoginHandler.func_72532_c(NetLoginHandler.java:82)
	at net.minecraft.server.ServerListenThread.func_71766_a(ServerListenThread.java:57)
	at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(DedicatedServerListenThread.java:36)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:927)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:332)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:782)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:665)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
Caused by: java.lang.NumberFormatException: For input string: "/81"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:569)
	at java.lang.Integer.parseInt(Integer.java:615)
	at org.maxgamer.maxbans.util.IPAddress.<init>(IPAddress.java:13)
	at ru.mankrash.maxbans.Fix.onJoin(Fix.java:23)
	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:498)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:441)
	... 17 more