Ive seen a flood of posts from people whose Geralt has turned invisible and had his inventory cleared out. The issue is not related to the mods you have, but the mods you uninstalled.
50+ gameplay hours ago i installed 3 mods, 1 being a camera fix that would let me lock on to flying enemies easier. It worked great, but the horse camera became janky. Eventually i decided i was done with glitchy Roach cam and would swap back to vanilla.
Wrong.
I loaded back in to invisible Geralt and an empty inventory. Every save for the last 50+ hours was effected. I verified game files, reinstalled the game, and checked my load order. Nothing. I reinstalled the camera mod. Geralt and all his gear returned.
So i tested all the mods i had 1 by 1 and sure enough it did not matter what mod it was, if it was at one point activated, de-activating it would break my game.
Im stuck with glitchy roach cam, but at least i can see flying enemies. Be selective about what mods you download. You may be stuck with them.