找不到模块'conductor-client'已经安装的模块？

Question

我正在尝试使用此module https://www.npmjs.com/package/conductor-client?activeTab=readme

我运行文档中给出的相同示例，但出现以下错误

https://codesandbox.io/s/thirsty-grass-ixm63

Error: Cannot find module 'conductor-client'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (/sandbox/src/index.js:2:25)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:5

文档 https://github.com/devit-tel/conductor-nodejs-client#readme