Mod Loader (Required)

Fabric

Minecraft Version(s) (Required)

1.21.1

Mod Version(s) (Required)

21.1.0

Other Mods Involved (Required)

Yes

Notes (Required)

1. Throw any medival weapons spear or axe
2. try to pickup
3. crash

Crash Report (Required)

https://pastebin.com/p0019uPp

latest.log (Optional)

No response

Report this to them.
AbstractArrow::getPickupItemStackOrigin is not @Nullable, they have to return an empty stack, not null.