npm run dev 오류 ..

오류가 나서 재설치하고 처음부터 합니다 .. ㅠ 

npm run dev 이런 상황에서 어떻게 해결할지 도와주세요 

sh: concurrently: command not found

npm ERR! code ELIFECYCLE

npm ERR! syscall spawn

npm ERR! file sh

npm ERR! errno ENOENT

npm ERR! react-boiler-plate@1.0.0 dev: `concurrently "npm run backend" "npm run start --prefix client"`

npm ERR! spawn ENOENT

npm ERR! 

npm ERR! Failed at the react-boiler-plate@1.0.0 dev script.

npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm WARN Local package.json exists, but node_modules missing, did you mean to install?

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

npm ERR!     /Users/kimhyesu/.npm/_logs/2021-04-16T11_16_00_841Z-debug.log

gimhyesuui-MacBook-Pro:boilerplate-mern-stack-master kimhyesu$