Plex Server Web UI Fails to Launch (Infinite Spinning Circle) on macOS

Okay I’ll try a PMS install and see if I can recreate the issue and the workaround.
While I work on it, you might read my bug report from a while back that included detailed steps to reproduce. The issue required me to be pedantic with the details for success.

btw, the last part of delpms asks you to delete the server from Plex’s list of Authorized Devices, but I didn’t see you mention whether you did that as part of the uninstall. If you’re unfamiliar with it, you would use app.plex.tv (or Plex for Mac) and go into Settings > Authorized Devices to find and remove it.

The fact that it’s spinning but not actually loading any webpage is why there are no logs.
Good luck!