teachable-snake@0.1.0 start: react-scripts start error

[johnfelipe]

apt install npm
git clone https://github.com/vince19972/TeachableSnake.git
cd TeachableSnake
openssl genrsa -out server.key 2048
openssl req -new -x509 -sha256 -key server.key -out server.cer -days 365 -subj /CN=143.198.121.131
npm start

and show me this error

> teachable-snake@0.1.0 start /root/TeachableSnake
> react-scripts start

sh: 1: react-scripts: not found
npm ERR! code ELIFECYCLE
npm ERR! syscall spawn
npm ERR! file sh
npm ERR! errno ENOENT
npm ERR! teachable-snake@0.1.0 start: `react-scripts start`
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the teachable-snake@0.1.0 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?

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2021-06-12T22_27_05_455Z-debug.log