Frontend frozen after login

Hi, I've launched both driver and frontend with example values abd I'm able to access frontend login page, but when I enter values given by driver and click on login it does nothing. Here is a screenshot of Firefox debugger:

Supervisor driver log reports connection ok:
`supervisor-driver | 192.168.160.1 - - [17/Mar/2021 10:57:53] "GET /testconn?passcode=502CE30C5FE07127 HTTP/1.1" 200 -`

By the way, if I enter sync or termsocket URIs as they are given, say http ://0.0.0.0:*someport*/, it reports connection error. Same thing if no scheme (http://) and final backslash (/) is entered. I have to change both to http ://127.0.0.1:*someport*/.

Reproduce the freeze from the frontend login page using the example driver values, and inspect the Firefox debugger alongside the supervisor driver's /testconn log. Also check the sync and termsocket URI handling for the documented forms; done means login proceeds and valid URI inputs no longer report a connection error.

Written by the indexing model from the issue text.