This may be caused by:
- A non-existing URL
- An essential component (LDAP or PostgreSQL) that is not accessible
- The web application being unable to load
- A non initialised Rudder installation. Please run /opt/rudder/bin/rudder-init to set it up
More information can be found in the Rudder webapp log file in
/var/log/rudder/webapp/ on the Rudder server.