问题 I have set up Browser Sync to work with nodemon and express. I am not using gulp or grunt, but rather running everything through npm scripts in my package.json file. Now, everything works, but I get an error when running my scripts and would like to know what the error is about and how I can fix it. First, here is my setup: { "scripts": { "dev": "npm run development", "dev:css": "postcss assets/css/style.css -o public/assets/css/style.css", "dev:sync": "browser-sync start --proxy 'localhost