Unable to save Power BI report into Power BI Server

Hi,

       I’m creating a simple power BI report in Power BI Desktop client with the connection setting is "Import", and the data source is Vertica Database, then I can save this report in my local and then I can save the same report into Power BI Server.

       But I’m create the same report with the connection setting is "DirectQuery". When I save this report into Power BI Server, it is giving the below error.

       "An error occurred while attempting to save the report to Power BI Report Server"

       Pls advice.Error Message

Thanks & Regards,

Kathir