Error?

[multitalented_Skyline4680]

I've been trying to delete some canvases that I wasn't using, but it keeps saying that this document cannot be deleted for some reason. I need to get more space to make new drawings, but it keeps saying that it cannot be deleted. Can anyone tell me why?

[kglad]

what app?

and don't attach screenshots. copy and paste them into your post.

[multitalented_Skyline4680]

Adobe Fresco