title: Flutter, play store - There is no deobfuscation file associated with this App Bundle
body: <p>I am developing Flutter app. I have build my app as the following:</p>
  <pre><code>flutter build appbundle --obfuscate --split-debug-info=./debug -v
  </code></pre>
  <p>I'm facing the above warning on play store console:</p>
  <blockquote>
  <p>There is no deobfuscation file associated with this App Bundle. If you
  use obfuscated code (R8/proguard), uploading a deobfuscation file will
  make crashes and ANRs easier to analyse and debug.</p>
  </blockquote>
  <p>From android studio <a href="https://developer.android.com/studio/build/shrink-code#decode-stack-trace" rel="nofollow noreferrer">decode an obfuscated stack trace</a> documentation it seems that I need to upload a <code>mapping.txt</code> file.</p>
  <ol>
  <li>I cannot locate the file in my Flutter project. Where is it?</li>
  <li>How to upload the file to play store console?</li>
  </ol>