Context Environment

Minecraft version: 1.12.2

Ancient Warfare 2 version: 2.7.0.772

Link to your crash log (if the game crashes): https://paste.ubuntu.com/p/TfpvNRfDz2/

Current Behavior

Copying items + causes server crash

Steps to Reproduce

1.Take the backpack and discard it.
2.You can open your backpack at the moment you discard it.
3.Take out the items in the GUI and close the GUI to pick up the discarded backpack.
4.The server will start to report errors, and the backpack can't be opened.
5.When you exit the server, the server will crash.
6.When the server is turned on, enter the server, open the backpack you picked up before, you will find another item, so you can copy more items.

What do you mean by backpack (sorry my english is not the best)? Do you mean the folder in the server configs by backpage?

Items referred to by item.backpack.0.name in Lang file

this
item.backpack.0.name=Small Pack
item.backpack.1.name=Travel Pack
item.backpack.2.name=Medium Pack
item.backpack.3.name=Large Pack

When do you think the bug will be fixed?

I have no idea how you manage to accomplish this bug, how do you both open and drop it at the same time?