Problems with the Reporting Services Custom Security Sample for Power BI Report configuration script

I'm implementing a Power BI server, and I would like to customize the login process. I'm following the instructions from the link: https://github.com/Microsoft/Reporting-Services/tree/master/CustomSecuritySample And I see that there is a PowerShell script to execute the configurations when using Power BI Report Server, but when I run it, it shows errors that can be seen in the image, and I notice that some files are missing, hence the errors. However, these files do not exist within the repository. So, I would like to know how I can obtain these files or how I can achieve this configuration? Since the instructions are not very clear, and there is little documentation available online. Thank you.