title: Debugging Ember JS -- Identifying line in code that causes an error
body: <p>So I'm getting the following error:</p>
  
  <p>Uncaught Error: Assertion Failed: The key provided to get must be a string, you passed undefined</p>
  
  <p>Should be easy enough to fix, if there was any indication of the line in my code that causes that error.</p>
  
  <p>Using the chrome console, I click on ember.debug.js:6254 next to the error, which just shows me the ember code that throws the error.  I can expand the error, but I just get a bunch of functions that can't be clicked on and no indication where they come from.</p>
  
  <p>Can someone please help me figure out how to identify the line in my Ember code that is causing the error.</p>