Scheduled refresh failure in powerbi

[Hari_1881]

Hi,

Im trying to schedule refresh for a semantic model for every 5 hours and I am using cloud gateway connection and workspace Identity as Authentication method(other auths like key, Oauth2.0 are failing and getting error like invalid credentials).

Only for workspace identity it doesnt give any error message. So tried that but still got the below error. 

The fix needs to be done at which end, powerbi or azure ?

Anyone faced similar kind of issue ? need help on this.

Note: Source are parquet files and those are resided in azure blob.

Error Message:
the last refresh attempt failed because of an internal service error. This is usually a transient issue. If you try again later and still see this message, contact support. {"error":{"code":"Premium_ASWL_Error","pbi.error":{"code":"Premium_ASWL_Error","parameters":{},"details":[{"code":"Premium_ASWL_Error_Details_Label","detail":{"type":1,"value":"We are unable to refresh the semantic model because the model uses a data connection configured for Workspace Identity authentication, but the workspace has no identity, or the model owner does not have permissions to use the workspace identity. Please configure a workspace identity and make sure the model owner has Contributor (or higher) access to the workspace, or use a different authentication method."}}],"exceptionCulprit":1}}}