I see this message when trying to upload 
Discussion
That’s not one of my error messages, what client are you using?
Are you just uploading a regular .jpg, .png? Not import?
Using iOS and safari, uploading .jpg
Ya know what I’m updated my phone last night and it mentioned security blah blah blah I wonder if they changed something ?!
Can you try a couple different browsers, or using the Damus auto uploader? Is working so far for me and haven’t heard any other issues.

