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org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at org.bukkit.craftbukkit.v1_11_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:232)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.PlayerInteractManager.a(PlayerInteractManager.java:444)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:897)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.PacketPlayInUseItem.a(PacketPlayInUseItem.java:37)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.PacketPlayInUseItem.a(PacketPlayInUseItem.java:1)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[?:1.8.0_121] at java.util.concurrent.FutureTask.run(FutureTask.java:266)[?:1.8.0_121] at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:739)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at java.lang.Thread.run(Thread.java:745)[?:1.8.0_121]Caused by: java.lang.IllegalArgumentException: Name cannot be null at org.apache.commons.lang.Validate.notNull(Validate.java:192)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at org.bukkit.craftbukkit.v1_11_R1.CraftServer.getWorld(CraftServer.java:1022)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at org.bukkit.Bukkit.getWorld(Bukkit.java:501)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] at com.comze_instancelabs.minigamesapi.MinigamesAPI.getServerBySignLocation(MinigamesAPI.java:1763)[?:?] at com.comze_instancelabs.minigamesapi.MinigamesAPI.onSignUse(MinigamesAPI.java:1503)[?:?] at sun.reflect.GeneratedMethodAccessor200.invoke(Unknown Source)[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[?:1.8.0_121] at java.lang.reflect.Method.invoke(Method.java:498)[?:1.8.0_121] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302)[spigot-1.11.jar:git-Spigot-6f7aabf-c8ff651] ... 17 more