Give specific reasons why seed photo is not being accepted

Unclear why my image for generating a video is not being accepted. This is my own photo with no graphic violence or from what I can see anything else that would be on the unacceptable list.

Can the warning spell out what is wrong with the image instead of listing all possible options? There is no copyright issue, as the photo is mine. I don't know why using it as the starting point for a video is unacceptable.