Может преуспеть без него （sy_flutter_qiniu_storage）
Ниже мое сообщение об ошибке
это трепетание доктора -v
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.9, on Mac OS X 10.15.4 19E287,
locale en-CN)
[✓] Android toolchain - develop for Android devices (Android SDK version
29.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 11.4.1)
[✓] Android Studio (version 3.6)
[!] IntelliJ IDEA Ultimate Edition (version 2019.3.4)
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
[✓] IntelliJ IDEA Community Edition (version 2019.3.4)
[✓] VS Code (version 1.44.2)
[✓] Connected device (1 available)