学React的第一道门槛，You are running `create-react-app` 4.0.3, which is behind the latest release (5.0.1)， ooop，
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npm uninstall -g create-react-app
yarn globalremove create-react-app
npx clear-npx-cache
npx create-react-app my-app
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最后，收到了 Happy hacking!
我不是黑客啊，只是coder而已！