Parametereized API URL Part "references other queries or steps, so it may not directly access a data source. Please rebuild this data combination"

Trying to import all of our custom entities and their properties from the Dataverse API into PBI.  I created a query of all of the LogicalNames, converted it to a list, and converted it to a parameter.

I built the GET request API URL as  as explained in https://community.fabric.microsoft.com/t5/Desktop/Variable-in-URL/td-p/141714

and APIEntityNames looks like this 

I read that this could be a privacy error, but File > Options and settings > Data source settings > Permissions > Privacy level is set to none, and a refresh gives the same error.