Check out example codes for "npm 'cross-env' is not recognized as an internal or external command". It will help you in understanding the concepts better.
Code Example 1
npm install -global cross-env npm install --no-bin-links
Code Example 2
First run: rm -rf node_modules rm package-lock.json yarn.lock npm cache clear --force Then run the command: npm install cross-env npm install and then you can also run: npm run dev
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