title: Daphne not logging errors
body: <p>I have the following systemd config</p>
  
  <pre><code>[Service]
  WorkingDirectory=/srv/www/project_a/project_a/
  Environment=JSON_SETTINGS=/srv/www/project_a/project_a.json
  ExecStart=/srv/www/project_a/bin/daphne -b 0.0.0.0 -p 8000 project_a.asgi:channel_layer
  Restart=always
  KillSignal=SIGTERM
  NotifyAccess=all
  StandardOut=file:/tmp/daphne-access.log
  StandardError=file:/tmp/daphne-error.log
  </code></pre>
  
  <p>But the daphne-access.log and daphone-error.log files are both empty, I thought daphne's default logging out be outputting to stdout?</p>
  
  <p>Tried: <code>--access-log=/tmp/daphne-access.log</code> which worked for access logs, but don't know where to get django errors when they happen.</p>