title: implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'
body: <p><strong><code>ERROR: implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'</code></strong></p>
  
  <p>I am unable add firebase dependency while uisng </p>
  
  <p>THIS DEPENDENCY..</p>
  
  <pre><code>implementation'com.google.firebase:firebase-database:16.0.1'
  </code></pre>