Subscribers Email Through API

Hii Team,

I am stuck in the starting point of the mailwizz installation. I installed the composer require ems-api/php-client . After this I went to examples/setup.php file and changed the API and URL. and I hit the url is: "" then it giving me error:
invalid params please refer the api documnetation.

please guide me from starting so I can work on it till my EOD.
We responded to your ticket. But please keep in mind that using the API requires coding knowledge.

Yes @ghimes,

You responded, I agree. But Next I asked for the proper changes .. on which FIle I need to make changes n all.
how will be the process??