title: Google Maps API V2 key suddenly stopped working
body: <p>I am working on a team where we are developing an app which is fully dependent on a Google Maps fragment. </p>
  
  <p>Suddenly it stopped working for me, all I see is a grey square with the normal Google Maps tools overlaying. It works fine for everyone else on the team. </p>
  
  <pre><code>10-28 09:52:51.909 32060-32338/com.astudio.andreas.mapstest E/b: Authentication failed on the server.
  10-28 09:52:51.910 32060-32338/com.astudio.andreas.mapstest E/Google Maps Android API: Authorization failure.  Please see https://developers.google.com/maps/documentation/android/start for how to correctly set up the map.
  10-28 09:52:51.914 32060-32338/com.astudio.andreas.mapstest E/Google Maps Android API: In the Google Developer Console (https://console.developers.google.com)
  10-28 09:52:51.914 32060-32338/com.astudio.andreas.mapstest E/Google Maps Android API: Ensure that the "Google Maps Android API v2" is enabled.
  10-28 09:52:51.914 32060-32338/com.astudio.andreas.mapstest E/Google Maps Android API: Ensure that the following Android Key exists:
  10-28 09:52:51.914 32060-32338/com.astudio.andreas.mapstest E/Google Maps Android API:  API Key: 
  10-28 09:52:51.914 32060-32338/com.astudio.andreas.mapstest E/Google Maps Android API:  Android Application (&lt;cert_fingerprint&gt;;&lt;package_name&gt;): 50:DA:86:04:6A:(etcetra etcetra)
  </code></pre>
  
  <p>This happens in Logcat. It was fine until I reset cache for the app in my Android Phone, now everything is grey. </p>
  
  <p>I have reset my local repository to the latest commit on BitBucket, but still I get an error.</p>
  
  <p><a href="https://i.stack.imgur.com/ifO2E.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ifO2E.png" alt="enter image description here"></a></p>