Not able to access the UI after restoring the full backup. Please help me troubleshoot this issue

I am unable to access the UI but am able to ssh in using putty.
Things I have done thus far to troubleshoot…

  1. Restore full backup, still not able to see the UI.
  2. Reinstall HA OS and then i can see the UI. But when i restore the full backup over this instance then its the same issue wherein i cannot see the UI.
    Over all i can ssh. Can someone please help me troubleshoot this issue. Not sure where i need to go and check logs, or make config changes to bare minimum to reduce any possible dependency causing the UI to break?