Trying to call Azure rest api by using managed identity in Azure synapse notebook but failed

I'm trying to call Azure rest api by using managed identity in Azure synapse notebook but get following error.

 

As you can see, I already enabled the managed identity run on my notebook and the contributor role also assigned to MSI for the corresponding azure devops project. Not quite sure where is the issue. May be I used wrong scopes?  Should I turn on something before execute the notebook?

Thanks for your help in advance!