Cleon App Local Development Open VS Code Open backend project as DevContainer: Reopen in Container -> Frontend Container Wait until VS Code has configured DevContainer – this can take a while Add a .env file (env.example) Open new terminal in VS Code Start server via npm run dev at http://127.0.0.1:8080/ Troubleshooting If you get an error like Bus error, delete node_modules and install dependencies again via npm install