Describe the bug
Cant open backpack interface when equiped
Can only switch Tools

To Reproduce
Have no idea, but this happen after i place Vanilla "Bee Nest" in backpack
Update
1.Equip Backpack
2.Place in 13 "Bee Nest" block

Expected behavior
Open backpack interface

Screenshots
Server error when i press keybind "backpack inventory" https://i.imgur.com/ECn6iGG.png

Required informations (please complete the following information):

• Mod version: TravelersBackpack-1.15.2-4.0.8.jar

Additional context
Other 2 people on my server can use backpack as usual
Restarting game/server no result

1.15.2 is not supported