After the PBI Report Server update and Desktop update to May 2019 all of my newly posted reports getting data from MS SQL Server stopped working. They work fine in the Studio, once uploaded to the RBI Report Server, they raise this error:
"We couldn't connect to the Analysis Services server. Make sure you've entered the connection string correctly."
When I check the Data Source, it is fine, green arrow on option "As the user viewing the report"
Could you help me what might be the cause of trouble? Older reports published on the PBI Report Server still work fine. Same source of data, same credentials, same browser, same PBI Report Server...