So im playing on Valhelsia 3 and added the mod onto the modpack and it seems when i placed the backpack in the curious api slot it now crashes my game the instant i press e to open my inventory.

There's not much I can do with this report, I will need at the very least a crash log

crash-2021-03-23_22.44.39-client.txt
Here's the crash log

The issue is with mod that only expects items of type ArmorItem to be rendered in armor slots while many other items can go in there. So it needs to be fixed there.

Looks to be Wildfire's Gender Mod which doesn't seem to be part of Valhesia

Yeah i had that added on to myself but if it's problem causing i'll remove it.