Doing some internal and external research, I potentially think the issue may lie within the "Kawaii Weapon Mods" Mod ( Kawaii Weapon Mods ) as i did testing on about three different profiles. One completely vanilla, one with said mod, one without.
I wasnt able to find anything in the console or error logs (which is why i cannot provide a screenshot of it) but for both the Vanilla and Without-Mod profiles, it worked fine for me covering the game and quests up to about level 30. My first issue i ran into this right after hitting level 20 and the respective quests.
Again, every situation might be different, but i only specifically removed KWM on a fresh profile and it seemed to work fine; i have not tested removing the mod from an already active profile with it for fear of corrupting said profile/damaging it. If anyone can confirm or find any more info, let me know.