require_once(Google/Auth/AssertionCredentials.php): failed to open stream:

[ya...@soyhormiga.com]

Hi, 

I am new to the google-api-php-client and I am getting this error from this file:

require_once(Google/Auth/AssertionCredentials.php): failed to open stream: No such file or directory in ../lib/google-api-php-client/src/Google/Client.php on line 18

Any help will be really appreciated!

Thank you very much!

Yael