When initially installing Analytics, attempting to go to the Dashboards presents the following error in all panes:
Cannot connect to the Analytics backend. Check the Analytics logs.
Release : 12.3
Component : ANALYTICS ON PREMISE
Confirm that the connection.properties has both the correct api_key and backend endpoint set.
You can test this within postman or curl, by going to the /analytics/api/v1/shared_dashboards endpoint with a header of Authorization and your api_key as the value.