Cannot read property 'getAuthInstance' of undefined
<html> <head> <meta name="google-signin-client_id" content="YOUR_CLIENT_ID"> </head> <body> <script> function signOut() { var auth2 = gapi.auth2.getAuthInstance(); auth2.signOut().then(function () { console.log('User signed out.'); }); } function onLoad() { gapi.load('auth2', function() { gapi.auth2.init(); }); } </script> <a href="#" onclick="signOut();">Sign out</a> <script src="https://apis.google.com/js/platform.js?onload=onLoad" async defer></script> </body> </html>
