How to connect qiwi open api scripts?

Question

PHP

Hello, please tell me how to connect these qiwi scripts
https://github.com/QIWI-API/bill-payments-php-sdk
I uploaded what I downloaded, created an index.php file, inserted the key there, on the server I got the error "Uncaught Error: Class 'Qiwi\Api\BillPayments' tried to run the file testcase.php with tests too errors

Answer 1

are you joking?
Everything is written in Russian