在安装 MongoDB 后尝试运行“npm start”时产生 CMD enoent ERR

Question

我以前可以毫无问题地使用“create-react-app”，但后来我安装了 MongoDB 并添加了它的 PATH。自从每次我尝试创建一个反应应用程序时，我都会收到一个错误。

我尝试了不同的解决方案： - 我清理了 PATH - 我尝试了不同的节点版本 - 我尝试使用“npm install react-scripts@2.1.8”进行安装

没有任何作用。不知道是MongoDB的问题，还是Path的变化。

我使用的是 Windows 7。

C:\Users\user\react-apps\mern-todo>npm start

> mern-todo@0.1.0 start C:\Users\user\react-apps\mern-todo
> react-scripts start

Starting the development server...

events.js:174
      throw er; // Unhandled 'error' event
      ^

Error: spawn cmd ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:240:19)
    at onErrorNT (internal/child_process.js:415:16)
    at process._tickCallback (internal/process/next_tick.js:63:19)
Emitted 'error' event at:
    at Process.ChildProcess._handle.onexit (internal/child_process.js:246:12)
    at onErrorNT (internal/child_process.js:415:16)
    at process._tickCallback (internal/process/next_tick.js:63:19)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! mern-todo@0.1.0 start: `react-scripts start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the mern-todo@0.1.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\user\AppData\Roaming\npm-cache\_logs\2019-08-21T19_28_08_965Z-debug.log

C:\Users\user\react-apps\mern-todo>

这是完整的 LOG 文件：

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'start' ]
2 info using npm@6.9.0
3 info using node@v10.16.3
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle mern-todo@0.1.0~prestart: mern-todo@0.1.0
6 info lifecycle mern-todo@0.1.0~start: mern-todo@0.1.0
7 verbose lifecycle mern-todo@0.1.0~start: unsafe-perm in lifecycle true
8 verbose lifecycle mern-todo@0.1.0~start: PATH: C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;C:\Users\user\react-apps\mern-todo\node_modules\.bin;C:\Program Files\MongoDB\Server\4.2\bin;C:\Program Files (x86)\nodejs\npm.cmd;C:\Program Files\nodejs\;C:\Users\user\AppData\Roaming\npm;C:\Users\user\AppData\Local\Programs\Microsoft VS Code\bin
9 verbose lifecycle mern-todo@0.1.0~start: CWD: C:\Users\user\react-apps\mern-todo
10 silly lifecycle mern-todo@0.1.0~start: Args: [ '/d /s /c', 'react-scripts start' ]
11 silly lifecycle mern-todo@0.1.0~start: Returned: code: 1  signal: null
12 info lifecycle mern-todo@0.1.0~start: Failed to exec start script
13 verbose stack Error: mern-todo@0.1.0 start: `react-scripts start`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\index.js:301:16)
13 verbose stack     at EventEmitter.emit (events.js:198:13)
13 verbose stack     at ChildProcess.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:198:13)
13 verbose stack     at maybeClose (internal/child_process.js:982:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
14 verbose pkgid mern-todo@0.1.0
15 verbose cwd C:\Users\user\react-apps\mern-todo
16 verbose Windows_NT 6.1.7601
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "start"
18 verbose node v10.16.3
19 verbose npm  v6.9.0
20 error code ELIFECYCLE
21 error errno 1
22 error mern-todo@0.1.0 start: `react-scripts start`
22 error Exit status 1
23 error Failed at the mern-todo@0.1.0 start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]

你们知道为什么会这样吗？我放弃了……

Answer 1

你看过这个吗？ stackoverflow.com/questions/28624686/… – 科林·里卡多

天哪，真不敢相信这这么容易。将 C:\Windows\System32\ 添加到 PATH 立即解决了问题，我必须在添加 Mongo 时将其删除。谢谢！