Everytime I try to open Watchdogs 2, it says “Not able to detect Uplay Installation”

I have Ultimate Xbox Gamepass and I play on PC, I downloaded Watchdogs 2 on Xbox gamepass and I have Ubisoft game launcher, but everytime I try to open the game, it says "Unable to detect Uplay Installation. Please make sure Uplay is installed." Can someone please help me? This just suddenly started happening, it used to work.