NPM install & start errors, "react-error-overlay"

I can't make an npm install or npm start command. When I try npm install the console returns:

> undefined postinstall C:\Users\Aristophanes
> cd packages/react-error-overlay/ && yarn build:prod

bash: line 0: cd: packages/react-error-overlay/: No such file or directory
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! undefined postinstall: `cd packages/react-error-overlay/ && yarn build:prod`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the undefined postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

The packages/react-error-overlay/ directory which I think the console is referring to is located on my computer at

C:\Users\Aristophanes\create-react-app-next\packages\react-error-overlay

If I open that path in cmd and try npm start I get this error:

> react-error-overlay@4.0.0 start C:\Users\Aristophanes\create-react-app-next\packages\react-error-overlay
> cross-env NODE_ENV=development node build.js --watch

bash: cross-env: command not found
npm ERR! file bash
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! react-error-overlay@4.0.0 start: `cross-env NODE_ENV=development node build.js --watch`
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the react-error-overlay@4.0.0 start 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?