npm run dev報這個錯 怎么辦？

F:\mooc\vue-demo>npm?run?dev
>?vue-demo@1.0.0?dev?F:\mooc\vue-demo
>?cross-env?NODE_ENV=development?webpack-dev-server?--config?webpack.config.js
F:\mooc\vue-demo\node_modules\_webpack-dev-server@3.1.9@webpack-dev-server\bin\webpack-dev-server.js:363
????throw?err;
????^
TypeError:?Cannot?match?against?'undefined'?or?'null'.
????at?addHooks?(F:\mooc\vue-demo\node_modules\_webpack-dev-server@3.1.9@webpack-dev-server\lib\Server.js:103:48)
????at?new?Server?(F:\mooc\vue-demo\node_modules\_webpack-dev-server@3.1.9@webpack-dev-server\lib\Server.js:116:5)
????at?startDevServer?(F:\mooc\vue-demo\node_modules\_webpack-dev-server@3.1.9@webpack-dev-server\bin\webpack-dev-server.js:355:14)
????at?processOptions?(F:\mooc\vue-demo\node_modules\_webpack-dev-server@3.1.9@webpack-dev-server\bin\webpack-dev-server.js:309:5)
????at?Object.<anonymous>?(F:\mooc\vue-demo\node_modules\_webpack-dev-server@3.1.9@webpack-dev-server\bin\webpack-dev-server.js:424:1)
????at?Module._compile?(module.js:570:32)
????at?Object.Module._extensions..js?(module.js:579:10)
????at?Module.load?(module.js:487:32)
????at?tryModuleLoad?(module.js:446:12)
????at?Function.Module._load?(module.js:438:3)
npm?ERR!?code?ELIFECYCLE
npm?ERR!?errno?1
npm?ERR!?vue-demo@1.0.0?dev:?`cross-env?NODE_ENV=development?webpack-dev-server?--config?webpack.config.js`
npm?ERR!?Exit?status?1
npm?ERR!
npm?ERR!?Failed?at?the?vue-demo@1.0.0?dev?script.
npm?ERR!?This?is?probably?not?a?problem?with?npm.?There?is?likely?additional?logging?output?above.
npm?ERR!?A?complete?log?of?this?run?can?be?found?in:
npm?ERR!?????C:\Users\li\AppData\Roaming\npm-cache\_logs\2018-10-17T04_34_48_449Z-debug.log
F:\mooc\vue-demo>