Last exception, please help :(

Hi! I won't bother copy-pasting my Last Exception file because it's way too long, but I keep getting one every time I open the game. I tried looking into it. I don't understand the code very well, but upon skimming through it, it noted NeilSimming's Angel of Death trait (from the Death Angels mod). It also mentioned the Feles Mutatio Spell from NeilSimming's Witches & Warlocks modpack, as well as some parts of Lumpinou's Psychic Sims mod. These mods work fine in my game (as far as I know, from the features I've used) but it keeps bugging me that I see the Exception error all the time, and multiple times in one game as well. There have also been a few times wherein my game would freeze before the Exception shows up. I really don't want to delete these mods because I need them for storytelling purposes, and have had these mods for a long time now. I'm also afraid if removing these mods will remove some buffs that were essential to my main Sims and affect my story progression/continuity. Does anyone know what the issue is with any of these mods?

I also noticed some "Last UI Exception" files in my Sims folder. I'm new to this, and was wondering if anyone could help me understand what that means?