title: Twilio IP Messaging token issue
body: <p>I'm setting up an iOS app to use the IP Messaging and video calling apis. I'm able to connect, create channels and setup a video call if I manually create hard-coded tokens for the app. However, if I want to use the PHP server (as described here <a href="https://www.twilio.com/docs/api/ip-messaging/guides/quickstart-ios" rel="nofollow noreferrer">https://www.twilio.com/docs/api/ip-messaging/guides/quickstart-ios</a>) then I always get an error and it can't connect anymore. </p>
  
  <p>I'm attaching a screenshot of what I see when I hit the <a href="http://localhost:8080" rel="nofollow noreferrer">http://localhost:8080</a> address which seems to produce a 500 Internal error on this URL: <a href="https://cds.twilio.com/v2/Streams" rel="nofollow noreferrer">https://cds.twilio.com/v2/Streams</a></p>
  
  <p>Thanks so much!</p>
  
  <p><a href="https://i.stack.imgur.com/uYC0y.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uYC0y.png" alt="enter image description here"></a></p>