title: Webhook subscription disabled. How to remove this error?
body: <p><a href="http://i.stack.imgur.com/hpj63.jpg" rel="nofollow">Screechshot of webhook being disabled </a></p>
  
  <p>Tried this command with my own access token:</p>
  
  <p>curl -X POST "<a href="https://graph.facebook.com/v2.6/me/subscribed_apps?access_token=" rel="nofollow">https://graph.facebook.com/v2.6/me/subscribed_apps?access_token=</a>"</p>
  
  <p>But this didn't work. What else should I try?</p>