Login fail to SharePoint 2019 on-premises server

Hi

We have just updated our SharePoint on premises server from 2013 to 2019. When do a manual or scheduled refresh on the Power BI Report Server the login to SharePoint 2019 server fails. It never failed on the old server.

When we do the same on the Power BI desktop version it works fine and the report updates.

The error we see is:

Login failed

SessionID: c3b00520-cc44-4235-a713-4ed731285bff

[0] -1055784932: DataSource.Error: SharePoint: Request failed: Unable to connect to the remote server. DataSourceKind = SharePoint. DataSourcePath = https://indkoeb/cej. ;SharePoint: Request failed: Unable to connect to the remote server. The exception was raised by the IDbCommand interface.

What can we do to solve the problem?

Best regards

Morten