This Power BI file contains reports for Microsoft's Office 365 Project Online Project Roadmap feature. The report connections will need to be updated to access the target Project Roadmap CDS environment, these steps for updating the parameter are covered in the supporting blog post here:

https://pwmather.wordpress.com/2019/01/30/project-roadmap-powerbi-report-pack-ppm-projectmanagement-msproject-projectonline-office365-powerplatform-dynamics365/

This does use the Power BI Common Data Service for Apps (Beta) connector - so this connector could change when released and the report might require some re-work.