This mod combined with immersive portals causes an on-launch crash on forge 19.2

Using
cloth-config-8.2.88-forge
heartstone-19.2-1.1.2
immersive-portals-2.3.5-mc1.19.2-forge
moonlight-1.19.2-2.2.38-forge

the game will crash before even opening, however if I disable either immersive portals or heartstone it will launch successfully.

edit : if it wasn't clear, I by no means expect the heartstone to work cross-dimensionally through immersive portals or anything, but, if it's possible, being able to have both of these mods together in a pack would be excellent, even if they don't integrate

I need latest.log

This issue still occurs on 1.20.1, here is my full bug report:
iPortalTeam/ImmersivePortalsModForForge#199

I see a mixin failing. That can't ever happen unless that mod is using an unsafe mixing type. In that case it's their issue