title: I get a error 400 when signing in with the google sign-in button on my webpage
body: <p>I am trying to put a google+ sign-in button on my website, but I get a 400 error when I try to sign in with it. this is all I get.</p>
  
  <pre><code>400. That’s an error.
  
  The requested URL was not found on this server. That’s all we know.the 
  </code></pre>
  
  <p>I have the following included in the <code>&lt;head&gt;</code>:</p>
  
  <pre><code>&lt;script src="https://apis.google.com/js/platform.js" async defer&gt;&lt;/script&gt;
  &lt;meta name="google-signin-client_id" content="620096179377-ula3qjt2s01qqhberlqq470n16kccnh5.apps.googleusercontent.com"&gt;
  </code></pre>
  
  <p>and the following where i wanted the button:</p>
  
  <pre><code>&lt;div class="g-signin2" data-onsuccess="onSignIn"&gt;&lt;/div&gt;
  </code></pre>