Http request action is failing even if request was succesful

on form submit, I am trying to submit the form values to my MailerSend’s API.
When testing my http action, the request is successful, and I receive the email with the proper form values.

But it seems that since MailerSend doesn’t return a body on its response, I am getting the error:

when testing the request on postman with the same headers and body, the response of my MailerSend API has a status code of 202, but has an undefined body value