How to fix Ambari UI not loading

some times if you run some curl calls expecting to fix some other issues - it may turn out to that Ambari UI does not even load the UI.

Running the below call would fix the issue and load the UI.

curl -u admin:admin -i -H 'X-Requested-By: ambari' -X POST -d '{"wizard-data":"{\"userName\":\"admin\",\"controllerName\":\"\"}"}'http://AMBARIHOST:8080/api/v1/persist

Note: Please note that these call should run with caution. contact Hortonworks support team.

This is tried and tested with Ambari-2.4.x