Mc 1.16.5 ERROR ITEM EDITOR 0.1.15

[17:58:30] [Async Chat Thread - #7/ERROR]: Could not pass event AsyncPlayerChatEvent to ItemEditor v0.1.15
java.lang.IllegalStateException: InventoryOpenEvent may only be triggered synchronously.
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:595) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at org.bukkit.craftbukkit.v1_16_R3.event.CraftEventFactory.callInventoryOpenEvent(CraftEventFactory.java:1287) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at org.bukkit.craftbukkit.v1_16_R3.event.CraftEventFactory.callInventoryOpenEvent(CraftEventFactory.java:1273) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at org.bukkit.craftbukkit.v1_16_R3.entity.CraftHumanEntity.openCustomInventory(CraftHumanEntity.java:334) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at org.bukkit.craftbukkit.v1_16_R3.entity.CraftHumanEntity.openInventory(CraftHumanEntity.java:319) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at at.freakey.itemeditor.listener.PlayerChatEvent.onPlayerChat(PlayerChatEvent.java:64) ~[?:?]
	at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor799.execute(Unknown Source) ~[?:?]
	at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:76) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:607) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at io.papermc.paper.adventure.ChatProcessor.post(ChatProcessor.java:222) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at io.papermc.paper.adventure.ChatProcessor.processingLegacyFirst(ChatProcessor.java:102) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at io.papermc.paper.adventure.ChatProcessor.process(ChatProcessor.java:60) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at net.minecraft.server.v1_16_R3.PlayerConnection.chat(PlayerConnection.java:2203) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at net.minecraft.server.v1_16_R3.PlayerConnection.c(PlayerConnection.java:2118) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:2056) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at net.minecraft.server.v1_16_R3.PacketPlayInChat$1.run(PacketPlayInChat.java:43) ~[purpur-1.16.5.jar:git-Purpur-1031]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_281]
	at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_281]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_281]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_281]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_281]