Only safe (?.) or non-null asserted (!!.)

[hailiangcock]

e: /Users/name/Library/flutter/.pub-cache/hosted/pub.flutter-io.cn/flutter_app_upgrade-1.1.0/android/src/main/kotlin/com/flutter/flutter_app_upgrade/FlutterAppUpgradePlugin.kt: (62, 54): Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type File?
e: /Users/name/Library/flutter/.pub-cache/hosted/pub.flutter-io.cn/flutter_app_upgrade-1.1.0/android/src/main/kotlin/com/flutter/flutter_app_upgrade/FlutterAppUpgradePlugin.kt: (127, 20): None of the following functions can be called with the arguments supplied:
@nonnull public open fun setClassName(@nonnull p0: Context, @nonnull p1: String): Intent defined in android.content.Intent
@nonnull public open fun setClassName(@nonnull p0: String, @nonnull p1: String): Intent defined in android.content.Intent

FAILURE: Build failed with an exception.

[✓] Flutter (Channel stable, 2.5.2, on macOS 11.1 20C69 darwin-x64, locale zh-Hans-CN)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] Connected device (3 available)