title: Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential
body: <p>I am trying to update Google sheet values.</p>
  
  <p>"Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential."</p>
  
  <p>I want to do this using API key not outh 2.0</p>
  
  <p>Can anyone have any suggestions.</p>