When running the mod on version 1.21.5, the game first lags and then crashes.
tried on 2 builds with mods and without other mods, on both builds the situation is the same.

MoreOverlays v1.24.1 now supports newer versions like MC 1.21.4, 1.21.5, 1.21.6, 1.21.7 and 1.21.8 (NeoForge)