Lab3: Send Success Email failed

[mjGitH]

I get the Azure Logic App URL set up in the LabModule 1 (my URL: https://prod-11.eastus2.logic.azure.com:443/workflows/237d5b5a01b24e03a937e38035c3274e/triggers/manual/paths/invoke?api-version=2016-10-01&sp=%2Ftriggers%2Fmanual%2Frun&sv=1.0&sig=tInhe9iSzhNMjmH82y96alwOpJRy0c_l6iLyK9ROf2k)

and followed the instruction to select post and fill in the body. But the Send email logic App component failed. The input of this component:
{
"url": "https://prod-11.eastus2.logic.azure.com:443/workflows/237d5b5a01b24e03a937e38035c3274e/triggers/manual/paths/invoke?api-version=2016-10-01&sp=%2Ftriggers%2Fmanual%2Frun&sv=1.0&sig=tInhe9iSzhNMjmH82y96alwOpJRy0c_l6iLyK9ROf2k",
"method": "POST",
"headers": {
"Content-type": "application/json"
},
"body": {
"dataFactoryName": "DataFactoryMei",
"successtype": "Succeeded",
"message": "159764059",
"pipelineName": "S3 to Blob Copy",
"recipient": "xxx@insulet.com"
}
}

The error:
{
"errorCode": "2108",
"message": "Error calling the endpoint. Response status code: ",
"failureType": "UserError",
"target": "Send Success Email"
}

I checked the adflab logicAppEmail and verified my account for the adflab Office365.
After I run the pipeline to send success email, I do not even see the activity in trigger history in the LogicAppEmail.

Can you tell me where is my problem?