title: flutter app could not locate aapt while building
body: <p>When I was trying to build and run a flutter app it shows me the following message:
  &quot;Could not locate aapt. Please ensure you have the Android buildtools installed.
  Exception: Problem building Android application: see above error(s).&quot;
  I already have both build tools and the android sdk installed, so I don't know what might have caused this issue.</p>