Animation Ownership
If you are experiencing issues playing your animations, or are receiving the sanitized ID error, it’s likely that you’re running into problems regarding ownership. Here are your options:
Set the animation’s priority to Action or higher Animations at an equal/lower priority will not play over Roblox’s default animations - Action is generally recommended.
Upload the animation to your game’s group If the game/animation is owned by a group, then both must be owned by the group.