Minecraft V 1.18.1
Forge V 39.0.64
Modified Anvil V 0.01
NyfsQuiver V 0.6.4

The game crashes if you try to load with both mods installed.

This is no longer an issue. Did some investigation and not sure what would cause this conflict but considering it's not crashing anymore should be good.

Might be related to NyfsQuiver requiring curios?