You may still have issues with fields called Manager and ManagerName, as CDS generates virtual fields by adding 'Name' as a suffix for lookups and option sets. Try renaming 'ManagerName' to something else to see if that's the issue
We're trying to connec to the Common Data Service using Power BI. However I think the issue sits within the CDS, reason being, we recently upgrades from Dynamics 365 v8.2 to v9.1. I reckon, doing so caused changes to the CDS.
I'm hoping that I come across others with the same error who ideally found a workaround.