"File is not an image" error
I am using the latest version of WordPress and H5P right now, but when I try to upload any image as a content in H5P, I receive the following error message: "File is not an image". I have tried it in different browsers, in incognito etc. with different type of pictures but the message is the same.
How can I solve this, could you help me?
Thank you, Péter