A backend service [ Candlepin ] is unreachable after doing a fresh install of Satellite 6.16 on RHEL 9.5

Issue

• After installing Red Hat Satellite 6.16.0 on top of RHEL 9.5 OS, The WebUI is unavailable and hammer ping returns the following error about candlepin.

  # hammer ping
  database:         
      Status:          ok
      Server Response: Duration: 0ms
  cache:            
      servers: 
       1) Status:          ok
          Server Response: Duration: 0ms
  candlepin:        
      Status:          FAIL
      Server Response: Message: Failed to open TCP connection to localhost:23443 (Connection refused - connect(2) for "localhost" port 23443)
  candlepin_auth:   
      Status:          FAIL
      Server Response: Message: A backend service [ Candlepin ] is unreachable
  candlepin_events: 
      Status:          FAIL
      message:         Not running
      Server Response: Duration: 0ms
  katello_events:   
      Status:          ok
      message:         0 Processed, 0 Failed
      Server Response: Duration: 0ms
  pulp3:            
      Status:          ok
      Server Response: Duration: 74ms
  pulp3_content:    
      Status:          ok
      Server Response: Duration: 69ms
  foreman_tasks:    
      Status:          ok
      Server Response: Duration: 5ms