Load Anim For Canvas Image From Sprite?

Hello! I created a Spritesheet Animation of an book that is opening, and now I want to use this animation on a canvas, that can be opened via U. Problem here is that the Book Sprite (normal gameobject) is always behind the UI canvas (I have a background there) and now I was trying to use a Canvas Image and just load the spritesheet animation there. But everytime I crate canvas -> image -> ad the spritesheet into the source image -> add component animator -> and then select the controller from the book, that already has the animation, the canvas ui anim gets yellow typo and says sprite is missing. How can I fix this? Aint there a way to just use the spritesheet animation on a canvas object?

Thanks!