PacketEvents related random exception

[KinczeK]

Stack trace

https://paste.gg/p/anonymous/9c46620addc44f66bb899c8f781e794b

How to replicate it if known

Exception appears randomly every 2-3 hours on server.

Grim version

2.3.67 (newest)

Server version

1.16.5 paper

Plugins

Chunky, Citizens, CoreProtect, DecentHolograms, EvenMoreFish, FastAsyncWorldEdit, GrimAC, GSit, LPX, PlugManX, QuickShop-Hikari, Shopkeepers, TradePlus, Vault, ViaBackwards, ViaVersion, Vulcan, WorldGuard

[SamB440]

Reproduce without plugins.

[KinczeK]

I cannot reproduce it by myself, becase it's caused by random player action.

[SamB440]

Unfortunately, you will have to hunt the issue down as this won't be fixed otherwise

[KinczeK]

Okay, but the issue is pretty clear i think, stacktrace clearly shows what's wrong?

[Cyramek]

Unfortunately not, I can confirm this issue exists, but I cannot trace cause since last year