The PVE services were up and running. The Web GUI came back up after restarting pveproxy.service. Thank you for your help. I am pinching myself.
That's strange though because I even restarted the server at one point without a resolution.
Anyway, I am back online now. Thank you so much.
I have been using proxmox 5 and recently upgraded successfully to 6am using Proxmox 6.0. After the upgrade, everything was working fine including the we gui. but recently I am not able to access the web gui. I am not sure what could have caused the problem.
I experienced this problem...