title: Vue Dev Tools - does not working "Open in Editor" button. How to fix this?
body: <p>I am trying to setup this feature from tutorial:
  <a href="https://github.com/vuejs/vue-devtools/blob/master/docs/open-in-editor.md" rel="nofollow noreferrer">https://github.com/vuejs/vue-devtools/blob/master/docs/open-in-editor.md</a></p>
  
  <p>but got an error</p>
  
  <pre><code>"C:\Users\User\AppData\Local\Programs\Microsoft" не является внутренней или внешней, исполняемой программой или пакетным файлом.
  Could not open LeadsEdit.vue in the editor.
  The editor process exited with an error: (code 1).
  
  To specify an editor, sepcify the EDITOR env variable or add "editor" field to your Vue project config.
  </code></pre>
  
  <p>in my vue.config.js (project based on vue cli 3.0)</p>
  
  <pre><code>const openInEditor = require('launch-editor-middleware');
  
  module.exports = {
      configureWebpack: {
          devtool: 'source-map',
      },
      devServer: {
          before(app) {
              app.use('/__open-in-editor', openInEditor('code'))
          }
      }
  }
  </code></pre>
  
  <p>UPD. Without this code the problem still remain. 
  UPD2.</p>
  
  <p>I am trying to set EDITOR variable in .env file</p>
  
  <pre><code>VUE_APP_EDITOR=/c/Users/User/AppData/Local/Programs/Microsoft VS Code/Code.exe
  </code></pre>
  
  <p>Or with vue.config.js</p>
  
  <pre><code>const openInEditor = require('launch-editor-middleware');
  
  module.exports = {
      configureWebpack: {
          devtool: 'source-map',
      },
      devServer: {
          before(app) {
              app.use('/__open-in-editor', openInEditor('/c/Users/User/AppData/Local/Programs/Microsoft VS Code/Code.exe'))
          }
      }
  }
  </code></pre>
  
  <p>But the problem still remains</p>
  
  <p>What may cause this problem?
  How can I fix this error?</p>