[Craft Scheduler Thread - 187/WARN]: [GalaxyEnchants] Plugin GalaxyEnchants va1.0 generated an exception while executing task 1617
java.lang.IllegalStateException: InventoryOpenEvent cannot be triggered asynchronously from another thread.
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:511) ~[spigot-1.14.4.jar:git-Spigot-94af569-d6b3edd]
        at org.bukkit.craftbukkit.v1_14_R1.event.CraftEventFactory.callInventoryOpenEvent(CraftEventFactory.java:1105) ~[spigot-1.14.4.jar:git-Spigot-94af569-d6b3edd]
        at org.bukkit.craftbukkit.v1_14_R1.event.CraftEventFactory.callInventoryOpenEvent(CraftEventFactory.java:1091) ~[spigot-1.14.4.jar:git-Spigot-94af569-d6b3edd]
        at org.bukkit.craftbukkit.v1_14_R1.entity.CraftHumanEntity.openCustomInventory(CraftHumanEntity.java:499) ~[spigot-1.14.4.jar:git-Spigot-94af569-d6b3edd]
        at org.bukkit.craftbukkit.v1_14_R1.entity.CraftHumanEntity.openInventory(CraftHumanEntity.java:374) ~[spigot-1.14.4.jar:git-Spigot-94af569-d6b3edd]
        at me.zaxos.galaxyenchants.GUI.BasicGUI.open(BasicGUI.java:167) ~[?:?]
        at me.zaxos.galaxyenchants.InventoryHandler$1.run(InventoryHandler.java:110) ~[?:?]
        at org.bukkit.craftbukkit.v1_14_R1.scheduler.CraftTask.run(CraftTask.java:81) ~[spigot-1.14.4.jar:git-Spigot-94af569-d6b3edd]
        at org.bukkit.craftbukkit.v1_14_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:54) [spigot-1.14.4.jar:git-Spigot-94af569-d6b3edd]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_221]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_221]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_221]