mysql没有响应nodejs

我已经安装了mysql express主体解析器和nodemon，但mysql没有响应node.js 我的密码与安装mysql server 8的密码相同 我试着在这段视频中做些什么

这是我的json

 {
  "name": "server",
  "version": "1.0.0",
  "main": "index.js",
  "scripts": {
    "start": "node index.js",
    "devStart": "nodemon index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "keywords": [],
  "dependencies": {
    "body-parser": "^1.19.0",
    "express": "^4.17.1",
    "mysql": "^2.18.1",
    "nodemon": "^2.0.6"
  },
  "devDependencies": {},
  "description": ""
} 

 {
  "name": "server",
  "version": "1.0.0",
  "main": "index.js",
  "scripts": {
    "start": "node index.js",
    "devStart": "nodemon index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "keywords": [],
  "dependencies": {
    "body-parser": "^1.19.0",
    "express": "^4.17.1",
    "mysql": "^2.18.1",
    "nodemon": "^2.0.6"
  },
  "devDependencies": {},
  "description": ""
}