Hi Zhang, the first error indicates that your storage account cannot be reached from your Databricks cluster. To troubleshoot, I would first start to fill in your azure storage account keys directly in your notebook and see if that works. Then I would try it using the secret scope.
The first error indicates that you cannot authenticate from Azure DevOps to Databricks. To troubleshoot, I would first start to fill in your Databricks Personal Access Token in your python script and see if that works (similar as in my first tutorial).Then I would pass it as parameter and finally, I would pass it as parameter in the key vault.