flutter clean
flutter packages get
flutter packages upgrade ( Optional - use if you want to upgrade packages )
Restart Android Studio or Visual Studio
- 39 material flutter package Visual39 material flutter package package found 39 zlib flutter_animate flutter package animate install package failed 39 package found 39 glib 39 bson get_object_size site-packages markupsafe 39 site-packages soft_unicode flutter package retry model modulenotfounderror 39 package 39 patch-package使用方法property