Working with PowerBI the other day to connect to a SharePoint Online List, the results

DataSource.Error: We couldn’t parse OData response result. Error: A null value was found for the property named ‘Andre_x0020_saksbehandlerId’, which has the expected type ‘Collection(Edm.Int32)[Nullable=False]’. The expected type ‘Collection(Edm.Int32)[Nullable=False]’ does not allow null values.

Turn’s out this is a known error when PowerBI desktop is trying to connect to People or Group field with the allow multiple selection option enabled

This issue is really annoying since i cannot turn off the multiple selection option in this case.

https://community.powerbi.com/t5/Desktop/Power-Query-SharePoint-List-Error-with-Allow-Multiple-Selection/td-p/29468