title: Yii2: Not Found (#404): Unable to find debug data tagged with '5578effb0790c4.13707485'
body: <p>I'm getting this at the bottom of my page, where the debug bar should be. What is the problem? </p>
  
  <p>This request: <code>http://localhost:81/xxx/web/debug/default/toolbar?tag=5578f180963e82.28312577</code> is returning 404.</p>
  
  <p>I need to see the error message &amp; stack trace generated when I log to <code>Yii::error()</code>. It's not showing in <code>runtime/log/app.log</code>, so I need the debug bar.</p>