Error With Publishing to Workspace

I am getting the following error when attempting to publish a report to my workspace.  This dashboard/report does have preview features enabled so I can have data connected from 2 data sources - BOTH ARE SHARED - I am not the Data Owner.

I have published single reports using this shared data (1 report for each shared data set) but never with them combined into one built report.  Does anyone know why this may be happening?