run npm run build.

npm ERR! code ENOENT

npm ERR! syscall open

npm ERR! path C:\Users\19621/package.json

npm ERR! errno -4058

npm ERR! enoent ENOENT: no such file or directory, open 'C:\Users\19621\package.json'

npm ERR! enoent This is related to npm not being able to find a file.

npm ERR! enoent

npm ERR! A complete log of this run can be found in:

npm ERR!     C:\Users\19621\AppData\Local\npm-cache\_logs\2022-10-08T03_16_20_868Z-debug-0.log

老师好，CMD运行报错，如上。说无法找到一个文件

报错的意思是找不到package.json文件。

项目文件夹应该不是19621吧？

需要cd 文件夹名称，进入文件夹中再运行。例如：

自己再试试。

老师好，文件夹中打开cmd依旧出现了

Note that the development build is not optimized.

  To create a production build, run npm run build.