Hi. At first say that i love this plugin jeje. but in 2.4.1 version seem havent problems at first days but with server activity and use the plugin, Chest++ send this bug repeteadly.

[13:29:18 WARN]: AsyncLogger error handling event seq=7876, value='':
[13:29:18 WARN]: java.lang.NullPointerException
[13:29:18 ERROR]: Could not pass event InventoryMoveItemEvent to ChestsPlusPlus v2.4.1-Release
java.lang.ArrayIndexOutOfBoundsException: null

That its the 'main' lines i think but send a thousand of lines like a cyclic and puto something like overflow but i dont understando so much of this... sorry and thanks for do so great work. have to delete the plugin. if can fix i will put again without a doubt. but my server console its freeze with this bug

Now i can see that a player in my server put incoherent itemframes and chestlink chest in a item filter system building. This is a player error of course, but the effect of this is the break of the server in a cyclic error mesagges. Sorry for my bad english and my bad java knowledge.

Hey, would you mind posting a video or photos of what you mean? :)

I'd like to fix this issue so if you could provide more info on how to replicate it that'd be helpful.

Yes sorry for late so much this is the complete error i think.

at com.jamesdpeters.minecraft.chests.listeners.HopperListener.onHopperMoveEvent(HopperListener.java:55) ~[?:?]
at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor1534.execute(Unknown Source) ~[?:?]
at org.bukkit.plugin.EventExecutor.lambda$create$1(EventExecutor.java:69) ~[patched_1.16.5.jar:git-Paper-564]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80) ~[patched_1.16.5.jar:git-Paper-564]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[patched_1.16.5.jar:git-Paper-564]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:607) ~[patched_1.16.5.jar:git-Paper-564]

    It produces when you put a same type of chestlink and 2 or mor with hopper and one out of systrem of hoppers. So when have to put item in a chest hace more than one that it is getting items, so the plugin triguer this error in cyclic while hopper event its active because more than 1 hopper are actuating at time in only 1 type (category: ej. minechest). Sorry for my english if u need a video to see better this i can do it. sorry and thanks for this great plugin

Just letting you know I am also having issues regarding this error, except I don't entirely know if it is from the same cause.