Power BI Realistic Load Test Toll - Blank Chrome window

I am trying to load test my Power BI Embedded capacity using the realistic load tool provided by Microsoft here.

I am able to run the scripts and it pops open a Chrome browser, and it should display the reports but the chrome window is blank.

I see that other people using this GitHub repo have had the same issue but no one seems to have an answer.

Has anyone had this error before or have overcome it?