title: Getting google calendar, "Service accounts cannot invite attendees without Domain-Wide Delegation of Authority."
body: <p>I want's to send invitation email's in <strong>Lumen</strong>.</p>
  
  <p>Currently using: <a href="https://github.com/spatie/laravel-google-calendar" rel="nofollow noreferrer">https://github.com/spatie/laravel-google-calendar</a></p>
  
  <p>This package is in <strong>Lumen</strong> (Laravel micro framework).</p>
  
  <p>I have completed all the Google API related steps given in this package. But still getting Google exception as</p>
  
  <blockquote>
    <p>"message": "Service accounts cannot invite attendees without Domain-Wide Delegation of Authority."</p>
  </blockquote>
  
  <p>Even though I have enabled domain wide delegation in service account. </p>
  
  <p>Also had doubt, Is it compulsory to have gsuite account? I am just trying with my normal gmail account.</p>