Mailjet Webhook doesn't work

Your software
My PHP version is : 7.3
MariaDB version is (delete as applicable):

Updating/Installing Errors
I am: Installing
installing via : Web

These errors are showing in the installer : None

These errors are showing in the Mautic log : None

Your problem
My problem is
I try to implement in Mautic 4.0 the MailJet webhook as described in the documentation:

but when I click on “Send” in the Mailjet control panel it gives me a error:

KO, Please check your URL

Steps I have tried to fix the problem :

  1. I double check the documentation and the url and everything is correct
  2. I check by FTP if there is the url https://mautic.example.com/mailer/mailjet/callback and there isn’t
  3. I try to navigate to the url and it gives me an error.

Is it possible that in Mautic 4.0 the url is changed?

Hello,

do you solved this problem?

I have the same problem in my mautic, and I also have this error in mautic 3.3.1.

Best regards,

Timo