title: Authorization callback URL from github not working, looping same page
body: <p>So i'm building a website that requires the user to be github authenticated in order to create and publish blog posts via the netify cms.</p>
  
  <p>so in github i've added the application. </p>
  
  <p>the homepage is set as:</p>
  
  <pre><code>https://example.netlify.com  
  </code></pre>
  
  <p>in order to reach the admin area of the site to post blogs and such the user must navigate to </p>
  
  <p><a href="https://example.netlify.com/admin/" rel="nofollow noreferrer">https://example.netlify.com/admin/</a> and authenticate via github. </p>
  
  <p>now the authentication part is working, i am logging into my github account but it loops back to the oauth page but with a weird url: </p>
  
  <pre><code>https://example.netlify.com/admin/?error=redirect_uri_mismatch&amp;error_description=The+redirect_uri+MUST+match+the+registered+callback+URL+for+this+application.&amp;error_uri=https%3A%2F%2Fdeveloper.github.com%2Fapps%2Fmanaging-oauth-apps%2Ftroubleshooting-authorization-request-errors%2F%23redirect-uri-mismatch&amp;state=5d971eb88a5073cf804e90d5#/collections/blog
  </code></pre>
  
  <p>I've set my Authorization callback URL to:</p>
  
  <pre><code>https://example.netlify.com/admin/#/collections/blog
  </code></pre>
  
  <p>which is where the user should log in to, in order to post blogs and articles </p>
  
  <p>so why does it keep looping? i've obviously set up a field incorrectly, i'm assuming that my Authorization callback URL to is incorrect?</p>