title: How to enable verbose APNS logging for a parse server app running on heroku
body: <p>A lot of users on my app are complaining that they are not receiving push notifications.</p>
  <p>I've noticed in my logs I have a lot of: <code>APNS Connection 1 Socket Error</code>. I'd like to get more detailed information, e.g. error codes, stack trace etc. which I'm presuming I'll need to enable verbose logging?</p>
  <p>So my question is: how do I enable verbose logging?</p>
  <p>In <a href="https://stackoverflow.com/questions/40453610/err-parse-server-push-adapter-apns-cannot-find-vaild-connection">ERR! parse-server-push-adapter APNS cannot find vaild connection</a> there's a reference to setting <code>verbose = 1</code> in heroku, but not sure how to do that. I've tried setting a &quot;Config Var&quot; with <code>verbose</code> as the key and <code>1</code> as the value but that doesn't seem to enable verbose logging.</p>
  <p>Do I need to add a line in my Node.js <code>index.js</code> file?</p>
  <p>There's a similar suggestion in this thread: <a href="https://github.com/parse-community/parse-server/issues/1206#issuecomment-201918938" rel="nofollow noreferrer">https://github.com/parse-community/parse-server/issues/1206#issuecomment-201918938</a>, but unfortunately no details on where to type: <code>DEBUG=apn</code>.</p>