title: Flutter App working debug mode, in release app not working
body: <p>When i run <strong>flutter run --release -v</strong> this command below error came</p>
  <pre><code>Caused by: java.lang.IllegalAccessError: Interface androidx.lifecycle.b implemented by class
  com.mr.flutter.plugin.filepicker.FilePickerPlugin$LifeCycleObserver is inaccessible (declaration of 'com.mr.flutter.plugin.filepicker.FilePickerPlugin$LifeCycleObserver' appears in
  /data/app/app.projects.xxx.mobile-1/base.apk)
  </code></pre>
  <p>My Gradle is
  classpath 'com.android.tools.build:gradle:4.0.0'   //4.0.1 //3.3.2 //3.5.3 //3.4.2</p>
  <p>distributionUrl=https://services.gradle.org/distributions/gradle-6.1.1-all.zip</p>