HTTPS connector PKIX

dear Camunders,

I am trying to implement custom https connector.
i have read simmiliar issue
and
Global Spin Data Format Configuration

based on advice given to the first reading ( I have used the same HttpConnectorConfigurator). I have created a fresh new project using 7.9 engine

HTTPSscreenshot

unfortunately, I am getting the same stack trace as without using service loader stacktrace.log (14.0 KB)
the end point I would like to connect is using the basic authentication.

Perhaps I am implementing the service loader in a wrong way, could you please give me an advice which path to take to solve this issue?

thank you!
M