title: Unable to create 'launch.json' file inside the '.vscode' folder (Cannot read property 'length' of undefined)
body: <p>After installing C/C++ extension from Microsoft on my Win32 PC, when I want to debug my code, occurs sth like that:</p>
  
  <pre><code>Unable to create 'launch.json' file inside the '.vscode' folder (Cannot read property 'length' of undefined).
  </code></pre>
  
  <p>how can I fix this problem?</p>