Issue with power pivot import using a Tabular datasource

Hello! I am trying to import a Power Pivot database with a Tabular data source into Power BI service via PBI desktop and set up data refresh via the on-premise data gateway.

I am able to import and refresh the dataset in PBI desktop.

When I publish the dataset from PBI desktop to PBI service, I get the report and the dataset in PBI service, but I am not able to refresh using an on-premises data gateway data source configured to the original Tabular database (SSAS 2012).

Error message:

You don't have any gateway installed or configured for the data sources in this dataset. Please install a new personal gateway or configure the data source for an existing data gateway.

The on-premises data gateway data source for the Tabular database does work for another PBI dataset which directly queries the Tabular database. I use the user id of the SSAS (Tabular) server administrator in the data source, which is also the same user id as the user logged in to Power BI service.

I am also able to import and refresh a Power Pivot database to PBI service that uses only a SQL Server (2012) database as a data source.

What should I try next?

Thanks!