PowerBi update 2019 January Direct Query Error!!!!

[Anonymous]

Hi all,

We updated the Power BI Report Server with Jan'19 version and we are taking the direct query error. The reports open the Power BI Desktop (January 2019) with no issue. After we save as the Power BI report server, the reports don't open and below error code. Can you help me please?

An unexpected error has occurred. Please try again later.
Please try again or contact the support team.
If you contact the support team, please provide the following information.
We could not connect to the Analysis Services server.
Make sure that you have entered the connection string correctly.
Request ID2adcd766-b9e7-5a79-431e-bb80b4a54c04
TimeThu Jan 24 2019 12:48:25 GMT + 0300 (GMT + 03: 00)
Version 15.0.1102.222

Regards.