Hey.
Are you talking about WonderfulWhims or WickedWhims here?
Mod has been updated for the latest release of The Sims 4.
PSA: If you are using the 1.105 release of The Sims 4.
Unfortunately the latest Sims update broke WonderfulWhims.
I assure you TURBO is hard at work, trying to release a new version of the mod, but in the meantime, all you can do is wait for TURBO, or play without mods for a while.
Hey.
Simply removing the mod from your Documents/Electronic Arts/The Sims 4/Mods directory should do the trick.
If you have a Windows PC and the OneDrive service, it has been known to be somewhat overzealous in bringing back deleted files from their grave, in which case try unlinking OneDrive or removing the mod from OneDrive directory as well.
Hey.
Can't say much about what the issue is without the exception files themselves. You can either use a service like a pastebin to post them here or find out how to report exception files here: https://wonderfulwhims.com/contact/