New error when refreshing report with dataflow source

[PowerBITestingG]

I am constantly getting one of this 2 errors:

An error happened while reading data from the provider: 'An internal error happened due to failed runtime assertion: Failed to get cluster uri: status=Unauthorized, content=.'"

The field 'pbi.error' of the record wasn't found.#(cr)#(lf) at Microsoft.Mashup.Engine1.Language.ValueCreator.CreateValueForThrow(IThrowExpression throwExpr)#(cr)#(lf) at Microsoft.Mashup.Engine1.Language.ValueCreator.<>c__DisplayClass23_0.

Any idea what it could be? My gateway permissions are updated. The dataflow does have compute engine on, but it had been running fine for months until a few days ago

[Anonymous]

Hi @PowerBITestingG ,

Based on the above information, this issue may need to collect log files for further troubleshooting. Since community support engineers don't have that access, I would suggest opening a Support Ticket. If you are a Power BI Pro or Fabric licensee, you can create a support ticket for free and a dedicated Microsoft engineer will come to solve the problem for you. 
It would be great if you continue to share in this issue to help others with similar problems after you know the root cause or solution.

The link of Power BI Support: Support | Microsoft Power BI

For how to create a support ticket, please refer to How to create a support ticket in Power BI - Microsoft Power BI Community

Best Regards,
Community Support Team _ Caitlyn