npm start 给出错误

我正在尝试使用NPX create react app创建一个React App，npm install运行正常，但是应该运行代码的npm start却报错了。

以下是错误信息：

> react-scripts start
i ｢wds｣: 项目正在运行于http://10.54.83.144/
i ｢wds｣: webpack的输出从这里提供
i ｢wds｣: 非webpack的内容从C:\Users\xyz\Desktop\app\my-app\public提供
i ｢wds｣: 404将回退到/
正在启动开发服务器...
events.js:288
      throw er; // Unhandled 'error' event
      ^
错误：spawn cmd ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:267:19)
    at onErrorNT (internal/child_process.js:469:16)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)
触发了'error'事件，位于ChildProcess实例上：
    at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12)
    at onErrorNT (internal/child_process.js:469:16)
    at processTicksAndRejections (internal/process/task_queues.js:84:21) {
  errno: 'ENOENT',
  code: 'ENOENT',
  syscall: 'spawn cmd',
  path: 'cmd',
  spawnargs: [ '/s', '/c', 'start', '""', '/b', '"http://localhost:3000"' ]
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! my-app@0.1.0 start: `react-scripts start`
npm ERR! 退出状态 1
npm ERR!
npm ERR! 在my-app@0.1.0 start脚本运行失败。
npm ERR! 这可能不是npm的问题。可能存在其他日志输出。
npm ERR! 完整的日志记录可以在以下位置找到：
npm ERR!     C:\Users\xyz\AppData\Roaming\npm-cache\_logs\2020-03-09T20_33_16_720Z-debug.log

这是package.json文件的内容：

{

这是完整的调试日志文件：

0 info it worked if it ends with ok
1 verbose cli [
1 verbose cli   'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Users\\xyz\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'start'
1 verbose cli ]
2 info using npm@6.14.2
3 info using node@v12.16.1
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle my-app@0.1.0~prestart: my-app@0.1.0
6 info lifecycle my-app@0.1.0~start: my-app@0.1.0
7 verbose lifecycle my-app@0.1.0~start: unsafe-perm in lifecycle true
8 verbose lifecycle my-app@0.1.0~start: PATH: C:\Users\xyz\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;C:\Users\xyz\Desktop\app\my-app\node_modules\.bin;C:\Program Files (x86)\RSA SecurID Token Common;C:\Program Files\RSA SecurID Token Common;C:\apache\maven3.6.1\bin;C:\Program Files\Java\jdk1.8.0_241\bin;C:\Program Files\nodejs\;C:\Users\xyz\AppData\Local\Microsoft\WindowsApps;;C:\Users\xyz\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\xyz\AppData\Roaming\npm
9 verbose lifecycle my-app@0.1.0~start: CWD: C:\Users\xyz\Desktop\app\my-app
10 silly lifecycle my-app@0.1.0~start: Args: [ '/d /s /c', 'react-scripts start' ]
11 silly lifecycle my-app@0.1.0~start: Returned: code: 1  signal: null
12 info lifecycle my-app@0.1.0~start: Failed to exec start script
13 verbose stack Error: my-app@0.1.0 start: `react-scripts start`
13 verbose stack Exit status 1
13 verbose stack     at EventEmitter. (C:\Users\xyz\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\index.js:332:16)
13 verbose stack     at EventEmitter.emit (events.js:311:20)
13 verbose stack     at ChildProcess. (C:\Users\xyz\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack     at ChildProcess.emit (events.js:311:20)
13 verbose stack     at maybeClose (internal/child_process.js:1021:16)
13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:286:5)
14 verbose pkgid my-app@0.1.0
15 verbose cwd C:\Users\xyz\Desktop\app\my-app
16 verbose Windows_NT 10.0.17763
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\xyz\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "start"
18 verbose node v12.16.1
19 verbose npm  v6.14.2
20 error code ELIFECYCLE
21 error errno 1
22 error my-app@0.1.0 start: `react-scripts start`
22 error Exit status 1
23 error Failed at the my-app@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 ]

我尝试删除了node_modules并清除了缓存，然后再次使用NPM INSTALL，但它们没有起作用。我在这里漏掉了什么？