AWS SDK on Lumen

Can anyone advice how to setup AWS to work with Lumen. I have it working perfectly with Laravel.

List of what I have done;

Install aws-sdk-php-laravel via composer 
Copy over the config/aws.php file from my Laravel app 
Copy over the config/app.php file from my Laravel app //because Lumen doesn't have this 
Added use AWS in my controller

$s3 = App::make('aws')->createClient('s3'); //create s3 client

Always get Error 500

via Chebli Mohamed