Describe the bug
I slept in bed. it crashed after a while while the meter which appeared near the top ticked up towards the end.

Is this bug related to another mod?
Quite possibly, it's a concurrent modification. But I have no idea what to point the finger at since it only lists your stuff in the error.

To Reproduce
I guess you'd have to play my pack to have it happen, cause I'm otherwise clueless. :V but I literally just slept for the first time after reaching 95+ fatigue, then when I laid in bed, I couldn't see anything other than the hue of the sky then it crashed as the meter filled up.

Expected behavior
.... to be able to sleep and it work properly and reduce my fatigue? Which it did after I loaded back in after returning to main menu, but I was hesitant to let it build up towards full again.

Screenshots
it's like I wedged under the bed or something or fell inside it.

crash report is attached, and you can see the quite extensive list of mods and all your required versions and stuff. :V
crash-2021-03-05_03.02.29-client.txt

Regarding the vision problem, do you have vanillaBugFixes or disableRendering enabled?

I turned off vanillabugfixes just now, and disable rendering was off already but I haven't gotten sleepy enough to rest just yet and I gotta go sleep irl cause got stuff on tomorrow. but I suspected it might've been related to those settings, yes. I'll check it next time I keep testing things. Since I tweaked the fatigue rate around and stuff like that. as for the concurrent modification crash, not sure what caused it, since I was able to sleep the rest of the fatigue off just fine with a bunch of furnaces and pulvuses going over the next day and night in game.

I can't seem to make it happen again though after doing a segmented full day sleep though, so it's odd.