I'm trying to fix our Google Sheets connection in FME Server after a restore but can't get the redirect URI set correctly. It's currently set to http://127.0.0.1:8080/fmeoauth. The Google authorization goes all the way to the "Allow" button before I get a "This page isn't working (ERR_EMPTY_RESPONSE)" error.
I've tried different URI strings, including http://127.0.0.1:8080/fmeserver/fmeoauth, but get the same error. When replacing 127.0.0.1 with localhost, or the hostname, the Google auth goes nowhere.
This is a private FME Server instance that is firewalled and has no public access. What else can I try?