SAP BW Direct Query is not working after publishing to Report Server

Hi,

I have connected to Power BI Desktop using Direct Query method to SAP BW. I have created dashboard successfully. However, once I published the report to the Report Server, it is no longer working. The dashboard shows blank. 

I have installed the .net connector on the report server. Do I need to install any other thing in order to connect?

Thanks,

Hasmath