Hi @SaraRoeder ...
Have you checked your personal "Files" storage area to see if you have enough available space to store your image? In Canvas, go to "Account" >> "Files". At the bottom left corner of your personal "Files" screen, you'll see a percentage bar. How much file space have you used out of your available space? If you are close to 100%, then that might be the issue. The other thing to check would be how large your image is that you are trying to upload? Is it several MB (megabytes) in file size? If so, you might want to reduce the file size, too.
Looking forward to hearing back from you.
