Fixed this error today:
Backup this folder and its contents, especially tactics, games and set pieces, C:\Users\%username%\Documents\Sports Interactive\Football Manager 2021\Gamepass
Uninstall FM21 from XBOX app on PC
Browse to C:\Users\%username%\Documents\ and rename "sports interactive" to "sports interactive.old"
Re install FM21 from XBOX app
Copy back the contents of "tactics", "set pieces" and "games" into their respective folders in C:\Users\%username%\Documents\Sports Interactive\Football Manager 2021\Gamepass
Launch FM and load your save
Launch genie scout as usual
Backup this folder and its contents, especially tactics, games and set pieces, C:\Users\%username%\Documents\Sports Interactive\Football Manager 2021\Gamepass
Uninstall FM21 from XBOX app on PC
Browse to C:\Users\%username%\Documents\ and rename "sports interactive" to "sports interactive.old"
Re install FM21 from XBOX app
Copy back the contents of "tactics", "set pieces" and "games" into their respective folders in C:\Users\%username%\Documents\Sports Interactive\Football Manager 2021\Gamepass
Launch FM and load your save
Launch genie scout as usual