NPM RUN Build

[Payam-Almasian]

Hi NPM Run build doesnt create build directory and npm run start shows error ERROR in ./app/src/app.js Module not found: Error: Can't resolve '../../build/contracts/SupplyChain.json' in '/home/ubuntu/Desktop/Code/WineSupplyChain/app/src' @ ./app/src/app.js 23:19-68 @ multi (webpack)-dev-server/client?http://localhost:8080 ./app/src/app.js ℹ ｢wdm｣: Failed to compile.