[22:10:40] [Craft Scheduler Thread - 13/WARN]: [CustomGUI] Plugin CustomGUI v2.2.9.9 generated an exception while executing task 2557
java.lang.NullPointerException
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:94) ~[patched_1.10.2.jar:git-Paper-914]
	at me.jacobculley.customgui.Item.ReturnItem(Item.java:166) ~[?:?]
	at me.jacobculley.customgui.GUI$1.run(GUI.java:120) ~[?:?]
	at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftTask.run(CraftTask.java:58) ~[patched_1.10.2.jar:git-Paper-914]
	at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:52) [patched_1.10.2.jar:git-Paper-914]
	at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) [patched_1.10.2.jar:git-Paper-914]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_111]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_111]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]