Version is disabled or provided wrong application info 2002 error while using PHP

I am using PHP v3 script to get logged in user info but problem is when ever i try to send request the 2002 error shown i have checked my app id and api key id and both are correct I have checked the same app id and rest api key id in post man and it send me proper result .

here is my code regarding it .

Backendless::initApp('41AEA6F5-2175-3FC3-FF99-EC372DCCC500', 'DFBCBADA-7FD6-4A96-FF02-A6FDB0ED7500', 'v1');
$user = Backendless::$UserService->login('username', '123456');

and the error is shown in this image attach as file and if its important I am using backendless in Laravel 5.4 and yes the backendless php file is attach properly and the request is send only the response from backendless is the issue here . Kindly guide me on this

Hello,

check if application id and secret key is correct.
we do not support php sdk, it is open sourced https://github.com/Backendless/PHP-SDK.