GET http://use.typekit.net/- * -ERR_EMPTY_RESPONSE

The * is for our user id.

This error on load started about a week ago.  It's intermittent - and preventing js from loading on our site.  Here's the application.html.erb code:

<script src="//use.typekit.net/- * -.js"></script>

<script>try{Typekit.load();}catch(e){}</script>

Did you change something?  We're hosted on Heroku and use Cloudflare.

Thanks!