Npm Start：启动服务器时出错

Question

我正在尝试运行npm服务器，但出现错误

Expo DevTools is running at http://localhost:19002
Opening DevTools in the browser... (press shift-d to disable)
Error: spawn powershell ENOENT
   at Process.ChildProcess._handle.onexit (internal/child_process.js:268:19)
   at onErrorNT (internal/child_process.js:468:16)
   at processTicksAndRejections (internal/process/task_queues.js:80:21)
npm ERR! code ELIFECYCLE 
npm ERR! errno 1
npm ERR! @ start: `expo start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ 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\Danger World\AppData\Roaming\npm-cache\_logs\2020-09-02T10_54_16_635Z-debug.log

任何人都可以帮助我

Answer 1

解决方案1 ​​---

1. 首先将Powershell作为％SystemRoot％/ system32 / WindowsPowerShell / v1.0添加到PATH。
2. 以管理员身份打开powershell并编写此命令Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force。
3. 最后一件事是npm-windows-upgrade。

解决方案2 ---

1. 将％SystemRoot％/ system32 / WindowsPowerShell / v1.0添加到PATH变量中，
2. cmd + q并搜索环境，然后按Enter键
3. 在高级标签中点击环境变量
4. 找到“路径/ PATH”变量，然后单击“编辑”
5. 单击新建，然后粘贴％SystemRoot％/ system32 / WindowsPowerShell / v1.0
6. 单击“确定”，然后重新启动终端，然后尝试重新安装