"Problem uploading image:..." error message

I keep getting the same error message today: (It’s a screenshot, approximately 199kb)

“Problem uploading image: Failed to upload image. Please try again.”

• Was able to post yesterday but not today. I managed to crop the screenshot to 70kb but still got the same error message.
• cleared cache on Voyager settings, deleted and reinstalled Voyager
• now it won’t let me post without photo