Musescore Error on uploading Scores to the website

Every time I try to upload a score to musescore.com, after it finishes loading I am greeted with a notification that my score cannot be uploaded to musescore.com with an "Error 401 Authorization Needed." It has been doing this for any score I try to upload and has been doing this for a couple weeks now. Has anyone else had this same problem? How do I fix it?