Issue after directquery connection on Azure Postrgressql Database on Power BI Report Server

Hello all,

I really need your help

I imported table in directquery mode on Power BI for Report Server from Azure Postgressql, I precise juste one source

After closing ; I have this message in attached at the openning

Unable to open document, this file uses many-to-many relationships or a composite model that combines DirectQuery sources and / or imported data. currently, these models are not supported in Power Query

Best regard