title: Not able to build producation apk
body: <p>I am getting this error.`FAILURE: Build failed with an exception.</p>
  
  <ul>
  <li><p>What went wrong:
  Execution failed for task ':OfficeChat:transformClassesAndResourcesWithProguardForRelease'.</p>
  
  <blockquote>
    <p>java.io.IOException: Please correct the above warnings first.</p>
  </blockquote></li>
  <li><p>Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.`</p></li>
  </ul>