Power BI Monitoring Implementation Issues with Fetch Catalog and Fetch Graph Scripts

I am currently implementing Power BI monitoring as outlined by Rui Romano. My goal is to extract logs and store them on my local system using PowerShell scripts, specifically the 'Fetch Activity', 'Fetch Catalog', 'Fetch DatasetRefresh', and 'Fetch Graph' scripts provided in the GitHub Repository  i.e. public repository.

So far, I have successfully executed the 'Fetch Activity' and 'Fetch DatasetRefresh' scripts and have connected the extracted data from these activities to the Power BI template file available in the GitHub repository at the end of the page(Ref Image Steps to Execute PBIMonitoring ).

However, I am encountering issues with the 'Fetch Catalog' and 'Fetch Graph' scripts. For the 'Fetch Catalog' script, I am receiving a "missing braces" error(Ref Image Error_On_FetchCatalog), and even after resolving that issue, I am unable to connect the generated data from the catalog to the Power BI template due to missing workspace-related information.

Regarding the 'Fetch Graph' script, I am facing a "403 Forbidden" error (Ref Image Error_on_FetchGraphps1) , which appears to be related to the permissions assigned to the service principal. I have already added the following permissions to the service principal(Ref Image ServicePrincipalPermissions)

Could you please provide assistance with the 'Fetch Catalog' and 'Fetch Graph' scripts, as well as guidance on the necessary permissions that need to be added to the service principal? Any help or suggestions would be greatly appreciated.