[12:32:20] [Main-Thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.IndexOutOfBoundsException: Index: 49, Size: 45
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_191]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_191]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:45) ~[kitpvp.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.lambda$run$1(SourceFile:625) ~[kitpvp.jar:1.8.8]
	at spg.lgdev.thread.iSpigotThread.lambda$schedule$0(SourceFile:44) ~[kitpvp.jar:1.8.8]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_191]
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [?:1.8.0_191]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_191]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [?:1.8.0_191]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_191]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_191]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
Caused by: java.lang.IndexOutOfBoundsException: Index: 49, Size: 45
	at java.util.ArrayList.rangeCheck(ArrayList.java:657) ~[?:1.8.0_191]
	at java.util.ArrayList.get(ArrayList.java:433) ~[?:1.8.0_191]
	at net.minecraft.server.v1_8_R3.Container.getSlot(SourceFile:105) ~[kitpvp.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(SourceFile:1686) ~[kitpvp.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:20) ~[kitpvp.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:7) ~[kitpvp.jar:1.8.8]
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils.lambda$ensureMainThread$0(SourceFile:6) ~[kitpvp.jar:1.8.8]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_191]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_191]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) ~[kitpvp.jar:1.8.8]
	... 9 more