Problem
An image cannot be uploaded to the class type.
Possible cause
The file is not in a supported format, or the image does not meet the minimum size requirements.
Solution
Make sure the file is JPEG, PNG or GIF.
Check that the image is at least 320 × 240 px.
Try with a different file to rule out a corrupted file.
If the problem persists, contact support and include details about:
The file format and size of the image.
Any error messages you saw.
When the issue occurred.