I had a problem trying to download a workflow. Instead of starting the downloading of the ga file, a web page with the following url "https://usegalaxy.org/u//w/project-workflow/json-download" opened with this error message: "HTTP 404 Errror page not found" (using Microsoft Edge) and "Not found. The resource could not be found. No route for /u/w/project-workflow/json-download" (using Mozilla FireFox). Also the URL for Importing to Another Galaxy gave me the same result. I worked around the problem by publishing my workflow, accessing galaxy without loging in and then using the option "save as". Can you help?