Mod Conflict Detector??

Here is a more recent one:
https://snootysims.com/wiki/sims-4/the-sims-4-mod-conflict-detector/

I haven't used it myself, but it sounds awesome!

?? it has a download link https://modthesims.info/d/561550/mod-conflict-detector-update-03-03-2018.html
it hasn't been updated but i remember having used it around january this year or even last year and it managed to show i had downloaded sims 3 cc for sims 4 which was making my game not able to open.

if you don't trust the program you could just backup your mods/saves just in case but pretty sure it still works

I use the one from 2018 dmitry in the link from above. It works like a charm. The only thing you cant trust is mods it tell you are broken (red color) when they are not. And the (blue green) color for conflicts. Or atleast I never had any issues leaving those conflicts in. This is not 100%accurate but let me tell just yesterday it helped me eliminate
Over 300 duplicate files and corrupted files that didn't finish downloading properly when I downloaded the cc. They end in cr.
Leaving one of these in my game in the past corrupted a save so I'm so super happy I found them!!

Word of advice. I was a dumbo for years I've been scrolling and scrolling to find all the bad files randomly scattered. When yesterday I discovered you can hit the little down facing arrow at the top to chance the order of the files. And I hit it until all the duplicates and corrupted files showed at the top and I could delete them all at once ?

One more tip. Hold ctrl key as you click on the files you want to delete in order to delete multiple at once. Then I right click while still holding ctrl down and delete