"No access token in OAuth IdP response" error when using Azure B2C Tenant

I'm getting this error after I've successfully generated an authorization code from Azure and the call of the /idpresponse endpoint has been made.

I've configured my Azure App to be a single tenant and am using the authorize and token endpoints advertised in my .well-known/configuration metadata.

Besides trying to figure out what is wrong, is there also a way to get a more detailed log out of CloudTrail or CloudWatch that will tell me what the heck is going on on the AWS side?

Thanks,

Mike