npm run dev 报错，请问怎么解决

[WJ-JAY]

ERROR Failed to compile with 7 errors 10:34:41

Module build failed: Error: [mpvue-loader] need "fileExt" option in file "build/vue-loader.conf.js"，init a new project and copy the directory "build/" to this porject, or just check the "fileExt" option
at Object.module.exports (C:\Users\JAY-WJ\Desktop\smart-home-master\node_modules\mpvue-loader\lib\loader.js:55:11)

Module build failed: Error: [mpvue-loader] need "fileExt" option in file "build/vue-loader.conf.js"，init a new project and copy the directory "build/" to this porject, or just check the "fileExt" option
at Object.module.exports (C:\Users\JAY-WJ\Desktop\smart-home-master\node_modules\mpvue-loader\lib\loader.js:55:11)

Module build failed: Error: [mpvue-loader] need "fileExt" option in file "build/vue-loader.conf.js"，init a new project and copy the directory "build/" to this porject, or just check the "fileExt" option
at Object.module.exports (C:\Users\JAY-WJ\Desktop\smart-home-master\node_modules\mpvue-loader\lib\loader.js:55:11)

Module build failed: Error: [mpvue-loader] need "fileExt" option in file "build/vue-loader.conf.js"，init a new project and copy the directory "build/" to this porject, or just check the "fileExt" option
at Object.module.exports (C:\Users\JAY-WJ\Desktop\smart-home-master\node_modules\mpvue-loader\lib\loader.js:55:11)

Module build failed: Error: [mpvue-loader] need "fileExt" option in file "build/vue-loader.conf.js"，init a new project and copy the directory "build/" to this porject, or just check the "fileExt" option
at Object.module.exports (C:\Users\JAY-WJ\Desktop\smart-home-master\node_modules\mpvue-loader\lib\loader.js:55:11)

Module build failed: Error: [mpvue-loader] need "fileExt" option in file "build/vue-loader.conf.js"，init a new project and copy the directory "build/" to this porject, or just check the "fileExt" option
at Object.module.exports (C:\Users\JAY-WJ\Desktop\smart-home-master\node_modules\mpvue-loader\lib\loader.js:55:11)

Module build failed: Error: [mpvue-loader] need "fileExt" option in file "build/vue-loader.conf.js"，init a new project and copy the directory "build/" to this porject, or just check the "fileExt" option
at Object.module.exports (C:\Users\JAY-WJ\Desktop\smart-home-master\node_modules\mpvue-loader\lib\loader.js:55:11)

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[Li0nkk]

请问解决了吗 ，我今天也遇见这个问题了