title: how to solve Firebase CLI error on start up
body: <p>when I open firebase CLI I get this error :</p>
  
  <pre><code> Let's make sure your Firebase CLI is ready...
  undefined:1
  
  
  
  SyntaxError: Unexpected end of JSON input
      at JSON.parse (&lt;anonymous&gt;)
      at ChildProcess.&lt;anonymous&gt; (C:\snapshot\firepit\welcome.js:115:27)
      at ChildProcess.emit (events.js:311:20)
      at maybeClose (internal/child_process.js:1021:16)
      at Socket.&lt;anonymous&gt; (internal/child_process.js:443:11)
      at Socket.emit (events.js:311:20)
      at Pipe.&lt;anonymous&gt; (net.js:668:12)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/NGSY0.png" rel="noreferrer"><img src="https://i.stack.imgur.com/NGSY0.png" alt="enter image description here"></a></p>
  
  <p>I am using windows 10 pro</p>