15.11 22:56:12 [Server] ERROR null
15.11 22:56:12 [Server] INFO org.bukkit.command.CommandException: Unhandled exception executing command 'tpa' in plugin MainPlugin v1.0
15.11 22:56:12 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:139) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:699) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.PlayerConnection.handleCommand(PlayerConnection.java:1648) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1483) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:1) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.a(SourceFile:10) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_181]
15.11 22:56:12 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_181]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.SystemUtils.a(SourceFile:199) [spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:900) [spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:417) [spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:835) [spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:733) [spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
15.11 22:56:12 [Server] INFO Caused by: java.lang.UnsupportedOperationException
15.11 22:56:12 [Server] INFO at java.util.AbstractList.add(AbstractList.java:148) ~[?:1.8.0_181]
15.11 22:56:12 [Server] INFO at java.util.AbstractList.add(AbstractList.java:108) ~[?:1.8.0_181]
15.11 22:56:12 [Server] INFO at java.util.AbstractCollection.addAll(AbstractCollection.java:344) ~[?:1.8.0_181]
15.11 22:56:12 [Server] INFO at me.innos.main.functions.tpa.TpaUtils.addRequest(TpaUtils.java:25) ~[?:?]
15.11 22:56:12 [Server] INFO at me.innos.main.functions.tpa.Tpa.onCommand(Tpa.java:61) ~[?:?]
15.11 22:56:12 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.13.2.jar:git-Spigot-2474d93-e693496]
15.11 22:56:12 [Server] INFO ... 15 more