Exporting Power BI reports using APIs and Power Automate Error 502

'We' are trying to export some Power BI reports into Power point 

 

It was tested successfully using a service user that has Admin access to the workspace where we have the reports

We have a solution that changes through time and we don’t know exactly which reports we need to export we need to have a way to dynamically export the reports.

 

We thought about doing this using a custom connector to iterate through the reports for the group:

https://learn.microsoft.com/en-us/rest/api/power-bi/reports/get-reports-in-group

and the calling the export for each of them:

https://learn.microsoft.com/en-us/rest/api/power-bi/reports/export-to-file-in-group

now our issue is that when I build the custom connector to get the reports in group I’m getting a 502 error:

 

We are using Basic Authentication here using the same service user and in theory this is connected 

 

Has anyone tried to connect to the Power BI APIs above using basic authentication and should this work?