have you added skins prior to the update? If so, they need to be updated to match the new version number. Either delete or look for new versions of the skinpak. PS. This will happen everytime you have extra skins that are tied to the version number of the car. Once the car is updated, the old version is deleted and the skins no longer work.
I've unistalled Ferrari 488 GTE and the Global Endurance Cup, and reinstalled both, but nothing changes.
did you join an online session with some downloaded cars? Use the mod manager to look for another instance of theFerrari.