title: How to make nginx error logs in JSON instead of its default logging format?
body: <p>I need to display statistics from log files on my custom GUI. The log files are expected to be huge so parsing them manually would be overkill. However, if there is a way to output the error logs in JSON instead of simple text, it could save a lot of time. </p>
  
  <p>Is there a way to do that?
  can we set custom log format for error_log?</p>