Error during Scheduled Refresh - Excel and SAP HANA only

[data_analyst_bi]

I created a new dashboard for this year and am getting the following error message:  

• Underlying error code-2147467259
• Underlying error messageNative queries aren't supported by this value.
• DM_ErrorDetailNameCode_UnderlyingHResult-2147467259
• Microsoft.Data.Mashup.ValueError.Detail#table({"Name", "Data"}, {})
• Microsoft.Data.Mashup.ValueError.ReasonExpression.Error

Researching and can't find any problems.  I am using the same SAP HANA data connection on older reports and they are working fine (with exactly the same tables).  It works fine when I manually refresh, but won't work on a scheduled refresh.  Any ideas?