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.