title: Laravel Lumen Return 500 Error When Sending Notification
body: <p>I tried to send a verification email in Laravel/Lumen using this piece of code.</p>
  <pre><code> public function sendEmailVerificationNotification() {
          try {
            $this-&gt;notify(new VerifyEmail);
          } catch(\Exception $e) {
            print_r($e-&gt;getMessage());
          }
        }
  </code></pre>
  <p>The problem is I always get error 500. The cause of the error seems to be <code>$this-&gt;notify()</code> function because when I comment that line, the service runs perfectly. I put the try-catch block to find out the reason of the failure but I got nothing. Instead of getting the cause, I only get the error 500 display.
  <a href="https://i.stack.imgur.com/r33n0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/r33n0.png" alt="Error 500" /></a></p>
  <p>I am confused because I cannot find the root cause. Do any of you have experienced the same thing? Or maybe you can suggest to me a way to debug it so that I can get the information about the root cause.</p>