Cannot read property ‘upgrade‘ of undefined at Server.＜anonymous＞ (/Users/mengxianwei/studywork

孟孟_mengmeng

于 2022-01-14 15:59:43 发布

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分类专栏：前端文章标签： webpack vue.js javascript

本文链接：https://blog.youkuaiyun.com/qq_40922656/article/details/122496261

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配置完webpack后启动报错
10% building 2/2 modules 0 active ERROR TypeError: Cannot read property ‘upgrade’ of undefined
TypeError: Cannot read property ‘upgrade’ of undefined
at Server. (/Users/mengxianwei/studyworkspace/single-multi-page/single-multi-page/node_modules/webpack-dev-server/lib/Server.js:135:47)
at Array.forEach ()
at new Server (/Users/mengxianwei/studyworkspace/single-multi-page/single-multi-page/node_modules/webpack-dev-server/lib/Server.js:134:27)
at serve (/Users/mengxianwei/studyworkspace/single-multi-page/single-multi-page/node_modules/@vue/cli-service/lib/commands/serve.js:172:20)
at processTicksAndRejections (internal/process/task_queues.js:93:5)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! single-multi-page@0.1.0 serve: vue-cli-service serve
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the single-multi-page@0.1.0 serve script.
npm ERR! This is proba