Rocketchat not loading in browser

Description:

Rocketchat is not loading in browser, remains on 3 white dots

Steps to reproduce:

1. Put in server URL

Expected behavior:

Rocketchat should load login screen

Actual behavior:

Stays on white background with 3 white dots

Server Setup Information:

• Version of Rocket.Chat Server: 6.5.0
• Operating System: Ubuntu 18.04
• Deployment Method: Snap
• Number of Running Instances: 1
• DB Replicaset Oplog:
• NodeJS Version:
• MongoDB Version:

Client Setup Information

• Desktop App or Browser Version: Firefox 115.5/Chrome/Brave
• Operating System: Debian 12

Additional context

I've changed the SITE URL to the correct value https://chat.xxxx.xxxx
Seems to constantly reset to http:/localhost:3000
I am using Apache reverse proxy
When i set to https://chat.xxxx.xxxx, still encounter the problem.
Works on Android rocketchat app (chat only, admin gets 3 dots)
Tried clearing cache and performing various suggestions found about this bug, nothing worked.

Relevant logs:

Firefox debug output
Uncaught ReferenceError: meteor_runtime_config is not defined
https://chat.xxxx.xxxx/1519e0159bfa893f84a8840a684f71abb3b48133.js?meteor_js_resource=true:1
https://chat.xxxx.xxxx1519e0159bfa893f84a8840a684f71abb3b48133.js?meteor_js_resource=true:1
https://chat.xxxx.xxxx/1519e0159bfa893f84a8840a684f71abb3b48133.js?meteor_js_resource=true:1

Brave debug output
Uncaught ReferenceError: meteor_runtime_config is not defined
at client_environment.js:1:1
at client_environment.js:78:1
at url_common.js:80:1

The browser console points to client_environment.js and url_common.js in the served JavaScript resource; start there and inspect how runtime configuration is supplied. Reproduce through the Apache reverse proxy with the stated SITE URL, then verify that the login screen loads without the meteor_runtime_config error.