title: how to enable google service in google console
body: <p>I enabled this api but i got this error in my ionic app</p>
  
  <pre><code>**https://www.googleapis.com/identitytoolkit/v3/relyingparty/signupNewUser?key=AIzaSyAU1ymBJwG6sscjWS0Po4bP_yw4YQa-2SY 400 Bad Request**
  </code></pre>
  
  <p>please suggest me what is wrong there.</p>