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Failed to build intl_utils:generate: ../../../.pub-cache/hosted/pub.flutter-io.cn/watcher-1.0.2/lib/src/constructable_file_system_event.dart:7:57: Error: The class 'FileSystemEvent' can't be extended, implemented, or mixed in outside of its library because it's a sealed class. abstract class _ConstructableFileSystemEvent implements FileSystemEvent { |
请尝试
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dart pub upgrade |
命令，如果还是报错
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dart pub cache repair |
这样我们就可以使用到最新的watcher-1.1.0版本，就不会出现上面这个报错了。