Arvados

Can't load Workbench 2, this is the error I get:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://tordo.arvadosapi.com//arvados/v1/users/current. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

There is a double slash in the URL which makes me think this is probably a configuration error, but also something we ought to be able to either warn about or handle automatically.