title: Artisan error doesn't show line number
body: <p>I'm writing a console command for my Laravel 5.1 app. While developing, I'm having an error somewhere. When artisan reports the error, it doesn't give me the line number or file; I just get an error in the shell highlighted in red background:</p>
  
  <pre><code>  [ErrorException]
    Undefined variable: answerer
  </code></pre>
  
  <p>How do I get artisan to show me more information about where the error occurred, specifically line number and file?</p>