title: issue with google calender API with PHP
body: <p>I am using google calendar API with PHP as per quickstart documentation but it shows me below errors.</p>
  
  <pre><code>PHP Fatal error:  Uncaught exception 'InvalidArgumentException' with message 'file does not exist' in C:\xampp\htdocs\google_calender\vendor\google\apiclient\src\Google\Client.php:839
  Stack trace:
  #0 C:\xampp\htdocs\google_calender\quickstart.php(17): Google_Client-&gt;setAuthConfig('C:\\xampp\\htdocs...')
  #1 C:\xampp\htdocs\google_calender\quickstart.php(63): getClient()
  #2 {main}
  thrown in C:\xampp\htdocs\google_calender\vendor\google\apiclient\src\Google\Client.php on line 839
  
  Fatal error: Uncaught exception 'InvalidArgumentException' with message 'file do
  es not exist' in C:\xampp\htdocs\google_calender\vendor\google\apiclient\src\Google\Client.php:839
  Stack trace:
  #0 C:\xampp\htdocs\google_calender\quickstart.php(17): Google_Clien
  t-&gt;setAuthConfig('C:\\xampp\\htdocs...')
  #1 C:\xampp\htdocs\google_calender\quickstart.php(63): getClient()
  #2 {main}
  thrown in C:\xampp\htdocs\google_calender\vendor\google\apiclient\src\Google\Client.php on line 839
  </code></pre>
  
  <p>I am stuck with this and still didn't get anything.</p>
  
  <p>can anybody help me with this.</p>