error log truncated in laravel 5.3
<p>i have this entry in my laravel 5.3 log</p>

<blockquote>
  <p>2016-12-22 17:23:37] local.ERROR:
  GuzzleHttp\Exception\ClientException: Client error: <code>POST
  https://api.sparkpost.com/api/v1/transmissions</code> resulted in a <code>400 Bad
  Request</code> response: { "errors": [ { "message": "Message generation
  rejected", "description": "recipient address suppressed due to
  customer p (truncated...)</p>
</blockquote>

<p>why does it truncate an important error message? now i cannot figure out what is going wrong...</p>