Librenms and osticket integration

am trying to integrate osticket and librenms, followed the documentation. But am getting an error , Test to osticket failed - general error.

any help appreciated.

What version of OSTicket are you running?

am using the latest version osTicket Core, v1.15.4 (Latest Release)

Thanks, what’s the URL you are using for the API URL field? Feel free to mask the domain.