I am not able to configure OAth2

[digiboostcrm]

Hello guys,

 I hope you doing great , in fact i am stuck with configuration of quick books online,

i am using OAth2 downloaded from
https://github.com/IntuitDeveloper/OAuth2_PHP/tree/master/OAuth_2.

i have setup for configuration with \OAuth2_PHP\OAuth_2\config.php
and after that calling index.php but not getting any response.
can any one guide me .
Thanks in advanced and appreciated .

[hlu2]

Do you use Ngrok or locahost? Did you set the 'oauth_redirect_uri' on config file? Did you put your Redirect URL on your app's Redirect URI part?