title: How to configure go back button in Browser for Flutter Web App
body: <p>I'm not asking about webview. This is about Flutter web app. I need to go back to a specific page when user press back button which is inbuilt in browser.</p>
  
  <p><a href="https://i.stack.imgur.com/0I08F.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0I08F.png" alt="enter image description here"></a></p>
  
  <p>Any guessing  ?</p>
  
  <p>I'm getting this error when I press  back button</p>
  
  <pre><code>Error: Assertion failed: org-dartlang- 
      sdk:///flutter_web_sdk/lib/_engine/engine/history.dart:110:14 
      _userProvidedRouteName != null
      is not true
          at Object.throw_ [as throw] (http://localhost:8300/dart_sdk.js:4770:11)
          at Object.assertFailed (http://localhost:8300/dart_sdk.js:4721:15)
  </code></pre>