After launching my modpack for some testing, Realistic Sleep failed to load along some other mods. Considering the error is java.lang.reflect.InvocationTargetException: null, I assume it has to be related to some changes in Forge's coding language.
Here's a crash report.
crash-2022-08-21_12.38.34-fml.txt

Realistic Sleep isn't the only one causing crashes here. Spirit, Sapience, and Enchant With Mob are all causing your pack to crash too. I'll fix what I can on my end if possible, but I do test my mods before I release them and it was working perfectly with this version of Forge the last time I checked.

Oh i have reported each mod crash to their github pages, and I managed to fix enchant with mob but had to remove spirit. I tested it again and Realistic Sleep is still causing the crash alongside sapience, however the crash for sapience seems to be of different nature than forge version

So apparently between Forge versions 41.0.x and 41.1.x, enough changes are present that it breaks mods.

You'll need to downgrade Forge or wait for the mods to be updated.

I see, well then. Thank you for clearing out