PBI Desktop authentication error with REST API

Hi,

In PBI Desktop, I am receiving below error when i try to get data using web connector via PBI REST API. I can run the same REST API from outside ( i tried even in MS REST API documentation page and it works fine eg., Datasets - Get Datasets In Group - REST API (Power BI Power BI REST APIs) | Microsoft Learn). I am on latest version of PBI desktop, if it helps. I thought of permission issue with my account but it works from browser etc., Am i missing something here? Any help is appreciated. Thanks