Why To email address blank while sending email by AWS pinpoint service?

Question

I am using AWS Pintpoint service to send an email to user, I am sending email through the lambda file and email was sent successfully to user inbox. but the issue is to address is showing blank. below is the code which I am using in lambda.

const pinpointEmail = new AWS.PinpointEmail();
return pinpointEmail
  .sendEmail({
    FromEmailAddress: fromEmailAddress,

    Destination: {
      ToAddresses: ['nayakr.bikash@gmail.com'],
    },
 
    Content: {
      Raw: { Data: mimeEmail.toString() },
    },
  })
  .promise()
  .then((data) => {
    return data;
  }); 

Gmail to address is blank

Any Help would be appreciate , why "to" address shown blank