title: Uncaught TypeError: Cannot read property 'getAuthInstance' of undefined at signOut
body: <p>I am integrating Google Sign-In in my asp.net web app. Sign-In Option works well but sign out in throwing the above mentioned error. </p>
  
  <p>Reference Link of implementation : <a href="https://developers.google.com/identity/sign-in/web/sign-in" rel="nofollow noreferrer">https://developers.google.com/identity/sign-in/web/sign-in</a></p>
  
  <p>Have anyone faced the same issue or has an fix to this?</p>