title: POST https://www.googleapis.com/identitytoolkit/v3/relyingparty/verifyPassword?key=<my_key> 404 (Not Found) when apk is installed
body: <p>I am developing an Ionic app with firebase. I am using angularfire for this. While I was developing the app everything was fine, but when I tried it on a mobile with the apk, it's showing the following error:</p>
  
  <pre><code>POST https://www.googleapis.com/identitytoolkit/v3/relyingparty/verifyPassword?key=&lt;my_key&gt; 404 (Not Found)
  </code></pre>
  
  <p>Why this error is showing after building apk? What are the mistakes I made?</p>