Login post request returns status 200 but doesn't return json

[sssaaammm]

I am trying to login to the api, and have followed the documentation, but i am getting a 200 status HTML response saying:

OOPS, SORRY ABOUT THAT

This page doesn't seem to exist.

Anyone else have this issue?

[jabe]

It would help if you could show us the code you used and if you paste the actual messages returned. A summary of your system, including your operating system could help too.

[sssaaammm]

Thanks for the quick response.

I made the post request using Postman, details are:

url: https://identitysso-cert.betfair.com/api/certlogin

{
"username": "<username>",
"password": "<password-for-betfair>"
}

headers:
Accept: application/json
X-Application: <app-key>
Content-Type: application/x-www-form-urlencoded

I'm using a 2020 M1 Mac running Big Sur.

A screenshot of the response is attached.

Thanks in advance!

[jabe]

I haven't used Postman or the non-interactive login. The URL is as it should be. Could you point me to wherever the Postman stuff is? I'll take a look and see if anything leaps out.

[sssaaammm]

It's using this API client: https://www.postman.com/

I've got it working using Python, but would be good to get postman working.

Seems using Python the 'Content-Type: application/x-www-form-urlencoded' isn't needed, but then when using Postman I get an error:

HTTP Status 400 - Required String parameter 'username' is not present

No problem if you can't get it working I will just use Python, but Postman is good for testing stuff API responses quickly.