Refresh error: Information is needed in order to combine data

Hello,

My report fails to refresh on the service (both manual and automatic refresh). The error message is:

Information is needed in order to combine data;Information about a data source is required.. The exception was raised by the IDbCommand interface. Table: .....

I saw this thread but it doesn't apply to me since I'm not using a Gateway: Information is needed in order to combine data

I combine data from Sharepoint Online files and a Web API. It was working fine until I moved my Sharepoint files to another Sharepoint. Resfresh works fine on PBI Desktop.

I tried several confidentiality settings (all None, all Organizational...), including the option to ignore them. I also tried to publish the report to a new workspace, didn't work.

Thanks for your help