CRETAE A .env Folder in yout backend and add thse

MONGODB_URI=Your MongoDB Atlas Dtabase URL PORT=5001 JWT_SECRET= mySecretKey CLOUDINARY_CLOUD_NAME=... CLOUDINARY_API_KEY=... CLOUDINARY_API_SECRET=...

NODE_ENV=development

Then:

cd frontend npm create vite@latest . react > js npm install npm run dev

cd backend npm init-y npm i express mongoose dotenv jsonwebtoken bcryptjs cookie-parser cloudinary socket.io npm install cloudinary multer cls npm i nodemon -D npm run dev