在写这篇文章之前，我到处寻找我的错误，但我没有找到任何东西。
尽管我在 pubspec.yaml 文件中正确记录了所有内容，但我在调试控制台中收到此错误：
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Error: unable to locate asset entry in pubspec.yaml: "assets/fonts/Lato-Regular.ttf".
? Built build/app/outputs/apk/debug/app-debug.apk.
Error: unable to locate asset entry in pubspec.yaml: "assets/fonts/Lato-Regular.ttf".
Exited (sigterm)
我的 pubspec.yaml 文件如下所示：
name: shopping_app
description: A new Flutter project.
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated …