Step 7 Got 'Not authorized.' from handleAuthResult function

[nithiroj]

Got 'Not authorized.' from handleAuthResult function. OAuth consent screen as a testing user.

[nithiroj]

Solution found.

Edit these:

<script type="text/javascript">
gapi.load('client:auth2', authorize); // use auth2
</script>

and

let plugin = 'JS';
function authorize(event) {
    gapi.auth2.authorize({client_id: clientId, scope: scopes, plugin_name: plugin, immediate: false}, handleAuthResult);
    return false;
}

[owidjaja]

This fix was necessary from step 3 onwards