Class 'Google_Client' not found

[yusufk]

Hi,

I followed the instructions and now get:
Fatal error: Uncaught Error: Class 'Google_Client' not found in /var/www/html/user/plugins/google-auth/plugin.php:36

Please help?

[yusufk]

I think I've fixed it. I did not user composer, and only included /vendor. I've now included the complete contents and updated plugin.php line 21:
require_once __DIR__ . '/google-api-php-client-2.4.1/vendor/autoload.php';