Are you guys looking into a fix for this issue that will not require Windows users to edit their registry keys? That won't fly with most of the beginners I run across.
I've updated PgAdmin from 4.27 to 4.28 (x64) and it doesn't work. After launching the server I see the following error (see screenshot in attachments). My browser is MS Edge (WebKit), but it doesn't work also in Chrome and Firefox.