Every time i load the game there's an error while loading the mods, with valhelsia core and forbidden & arcanus java.lang.NoSuchFieldError: LOOT_MODIFIER_SERIALIZERS

here's the crash report.
crash-2022-08-02_08.31.10-fml.txt

I am also having this issue... I ponder if a mod is conflicting with it... Have you tried isolating the mod to see if it starts up? By itself?

Forbidden & Arcanus for 1.19 requires Forge version 41.0.33. Newer versions won't work due to a few breaking changes in Forge.