Unable to connect to power bi data source

[Anonymous]

I am using power BI report server and source is a power bi dataest, I have premium workspace

I uploaded my pbix in power bi service, then started to work on power bi report builder and selected datasouce as the above powre bi dataset

when i am building dataset --> Query designer I get attached error Unable to connect, why am I getting this error and what software do I need to reinstall for this to work ? Should I reinstall power bi desktop or power bi report builder ?

[Anonymous]

@Anonymous 
Did you follow the details>>, what does it says? Some people have solve it by update to the latest version of report builder. Give it a try.

Regards
Paul