title: Message "error: resource android:attr/lStar not found"
body: <p>A Flutter Android app I developed suddenly compiled wrong today.</p>
  <p>Error:</p>
  <h3>What went wrong:</h3>
  <p>Execution failed for task ':app:processDebugResources'.</p>
  <blockquote>
  <p>Android resource linking failed
  /Users/xxx/.gradle/caches/transforms-2/files-2.1/5d04bb4852dc27334fe36f129faf6500/res/values/values.xml:115:5-162:25: AAPT: error: resource android:attr/lStar not found.</p>
  </blockquote>
  <p>error: failed linking references.</p>
  <h3>I tried</h3>
  <p>Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.</p>
  <h3>Get more help at <a href="https://help.gradle.org" rel="noreferrer">https://help.gradle.org</a></h3>
  <p>The <em>build failed</em> in 16 seconds.</p>