错误的node.js / Sequelize连接到mysql数据库中的nodem

Question

我从nodejs开始，当我尝试连接到数据库mysql时出现此错误。 有人帮忙吗？

排序连接，使用数据库代码连接MySql数据库

const Sequelize = require('sequelize')
const sequelize = new Sequelize('teste', 'root','Niver@070678', {
    host: "localhost",
    dialect: 'mysql'
})

sequelize.authenticate().then(function(){
    console.log("Conectado com sucesso!!!")
}).catch(function(erro){
    console.log("Falha ao conectar: "+erro)
})

错误节点：

[nodemon] 1.18.9
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node teste.js`
internal/modules/cjs/loader.js:583
    throw err;
    ^

Error: Cannot find module 'sequelize'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
    at Function.Module._load (internal/modules/cjs/loader.js:507:25)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:22:18)
    at Object.<anonymous> (C:\xampp\htdocs\nodejs\teste\teste.js:1:81)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
  [nodemon] app crashed - waiting for file changes before starting...