Can't process FILE - upload_uri

I started getting a bunch of

Can't process FILENAME - upload_uri errors.

I have no idea what upload_uri means, nor can I find it in the help section.

hey,
i think this is an error in uploading file.
https://knowledgebase.constantcontact.com/articles/KnowledgeBase/5308-error-message-there-is-a-problem-uploading-your-image?lang=en_US
you can go through the above link for troubleshooting process. step wise instruction is given in this.
best regards!!

I may be misunderstanding, but I don’t see what that link has to do with my problem. First of all, it’s from constant contact. Second of all, it has to do with images, which are not the files types I’m uploading. Finally, I don’t actually see any troubleshooting steps.

Perhaps you linked to the wrong page?

Some new information. On another computer I’m getting user rate limit exceeded errors. Perhaps these are related?