pgAdmin 4 v 7.1 not loading after trying everything

I am having serious problems getting pgAdmin 4 to load. I'm running on Windows 10. Please see attached screenshot. I have naturally tried to troubleshoot this problem myself. I have followed instructions from a google search to change the .js content type to have the value text/javascript in the registry editor and then closed pgadmin and its servers in task manager. Annoyingly I still get the same error message.

I previously tried to install postgreSQL about 2 months ago and then deleted it. Could it be that I have somehow caused a problem. I uninstalled postgreSQL by right clicking on it and clicking uninstall.

What else coud I try to troubleshoot this problem? Thank you

I installed pgAdmin 4 directly from an exe file and that seems to have worked. I don't understand why it wouldn't install properly as part of the postgresq package but problem solved. :)

Edit : The link to working pgAdmin 4 is https://www.pgadmin.org/download/pgadmin-4-windows/

StackExchange Database Administrators Q#327474, answer score: 2