To Solve Installed Build Tools revision 31.0.0 is corrupted. Remove and install again using the SDK Manager Error Just Check the Project code panel, and go to Gradle Scripts --> build.gradle file, Change 3 places: compileSdkVersion, buildToolsVersion, targetSdkVersion from 31 to 30. You'll notice a lightbulb hit occurring on modified lines, click and choose sync [to version 30]. The Android Studio will automatically download BuildTool V30 and change project settings.