Getting Server Error after selecting a value for a Parameter for Paginated Report in Report Server

Hello,

I am getting this -
Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500 

as an error in Power Bi Report Server. I have created a paginated report in the Power Bi Report Builder. It has 5 parameters. The paginated report is working fine in Report Builder but after deploying it on the Report Server, the report is loaded but as soon as I select value for the first parameter, I am getting the 500 error mentioned above. Can anyone please help me with this?

Thank you!