Sites and Current Scans not loading in InsighVM dashboard

Both sites and current scans are not loading in the dashboard. This also blocked the option to delete a site using the GUI. Is any way to get this functionality to work? Has anybody experienced this?

Found a default settings that was disabled and caused this operational issue.

Path: Administration/Global and Console Settings/Console/Administer/Scan Engines/Connections/Scan Results.

Make sure the “Retrieve incremental scan results from distributed engines” option is enabled.