Now I am passing it the same way you have mentioned, but my code still gets stuck as in above screenshot.

The screenshot shows warning from pyplot (matplotlib) not ClearML, or am I mising something ?

My guess is that it can't resolve credentials. It does not give me any pop up to login also

If it fails, you will get an error, there will never a popup from code 🙂

... We need a more permanent place to store data

FYI you can store the "Dataset" itself on GS (instead of the default clearml file server (basically pass it as output_uri to the Dataset when creating it).