Data source access error. Plase contact the gateway administrator

I have set up an On premise gateway on a server for SQL Server 2016 Developer Edition.  The gateways says it is successfully connected to the live connect tabular model on SQL Server 2016 Developer Edition.  When I try to get a report to use this data source, I get the error Data source access error. Plase contact the gateway administrator.  I have not been able to resolve this error.  could it be that you are not allowed to create a live connection to a Tabular model running on SQL Server 2016 Developer Edition?

Any help would be appreciated.

--Ginger