npm ERR! premature close
npm ERR! code ENOTEMPTY
npm ERR! syscall rmdir
npm ERR! path C:\Users\86199\AppData\Roaming\npm-cache\_cacache\tmp\git-clone-3e42dca8\demo
npm ERR! errno -4051
npm ERR! ENOTEMPTY: directory not empty, rmdir 'C:\Users\86199\AppData\Roaming\npm-cache\_cacache\tmp\git-clone-3e42dca8\demo'

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\86199\AppData\Roaming\npm-cache\_logs\2020-12-10T07_17_16_161Z-debug.log
PS D:\project\fe_pmp_v3> npm cache clear --force
npm WARN using --force I sure hope you know what you are doing.
npm ERR! code ENOTEMPTY
npm ERR! syscall rmdir
npm ERR! path C:\Users\86199\AppData\Roaming\npm-cache\_cacache\tmp\git-clone-b0ce8daa\demo
npm ERR! errno -4051
npm ERR! ENOTEMPTY: directory not empty, rmdir 'C:\Users\86199\AppData\Roaming\npm-cache\_cacache\tmp\git-clone-b0ce8daa\demo'

1.报错说directory not empty，你这个目录不是个空目录，你看下
2.错误码errno -4051，可以搜一下这个错误码
3.删掉你的node_modules，重新install