Error message help MS Defender and AWS

Hi,

I am trying to configure MS Defender for Cloud on AWS and I am getting the following error:

'Failed to create security connector. Error: 'Contract validation of data model failed, with error: The json value of configuration failed validation, with reason: Configuration : Configuration value cannot be null!'

I have tried creating template with both options management account and single account. Either ways I am getting the same error. Could the community help me in configuring the same?

In case of Single account option I am not getting service principal option as shown here: https://www.youtube.com/watch?v=LHwgEFXT3kQ

In case of Management account option, the documentation here: https://learn.microsoft.com/en-us/azure/defender-for-cloud/quickstart-onboard-aws?pivots=env-settings at step number 12 does not explains naming of Stack and Stackset. When one creates a Stackset so stack is automatically created so why do we need to create a stack first.