我收到此错误：
Error: Cannot find module 'bcrypt'
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:20:18)
at Object.<anonymous> (D:/slack-clone-server/models/user.js:2:1)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at loader (D:\slack-clone-server\node_modules\babel-register\lib\node.js:144:5)
at Object.require.extensions.(anonymous function) [as .js] (D:\slack-clone-server\node_modules\babel-register\lib\node.js:154:7)
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)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Sequelize.import (D:\slack-clone-server\node_modules\sequelize\lib\sequelize.js:393:62)
at Object.<anonymous> (D:/slack-clone-server/models/index.js:11:9)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at loader (D:\slack-clone-server\node_modules\babel-register\lib\node.js:144:5)
at Object.require.extensions.(anonymous function) [as .js] (D:\slack-clone-server\node_modules\babel-register\lib\node.js:154:7)
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)
at Module.require (internal/modules/cjs/loader.js:637:17)
[nodemon] app crashed - waiting for file changes before starting...
我尝试了bcryptjs并遇到相同的问题。有什么办法吗？ 从stackoverflow尝试了很多人员，但仍然找不到真正的解决方案。