npm run build时报错

E:\Vue\myvue>npm run build

> myvue@1.0.0 build E:\Vue\myvue

> webpack --config webpack.config.js

E:\Vue\myvue\node_modules\webpack-cli\bin\cli.js:244

                                throw err;

                                ^

Error: Cannot find module 'E:\Vue\myvue\webpack.config.js'

    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:580:15)

    at Function.Module._load (internal/modules/cjs/loader.js:506:25)

    at Module.require (internal/modules/cjs/loader.js:636:17)

    at require (E:\Vue\myvue\node_modules\v8-compile-cache\v8-compile-cache.js:159:20)

    at WEBPACK_OPTIONS (E:\Vue\myvue\node_modules\webpack-cli\bin\convert-argv.js:133:13)

    at requireConfig (E:\Vue\myvue\node_modules\webpack-cli\bin\convert-argv.js:135:6)

    at E:\Vue\myvue\node_modules\webpack-cli\bin\convert-argv.js:142:17

    at Array.forEach (<anonymous>)

    at module.exports (E:\Vue\myvue\node_modules\webpack-cli\bin\convert-argv.js:140:15)

    at yargs.parse (E:\Vue\myvue\node_modules\webpack-cli\bin\cli.js:241:39)

    at Object.parse (E:\Vue\myvue\node_modules\yargs\yargs.js:567:18)

    at E:\Vue\myvue\node_modules\webpack-cli\bin\cli.js:219:8

    at Object.<anonymous> (E:\Vue\myvue\node_modules\webpack-cli\bin\cli.js:538:3)

    at Module._compile (internal/modules/cjs/loader.js:688:30)

    at Object.Module._extensions..js (internal/modules/cjs/loader.js:699:10)

    at Module.load (internal/modules/cjs/loader.js:598:32)

    at tryModuleLoad (internal/modules/cjs/loader.js:537:12)

    at Function.Module._load (internal/modules/cjs/loader.js:529:3)

    at Module.require (internal/modules/cjs/loader.js:636:17)

    at require (internal/modules/cjs/helpers.js:20:18)

    at Object.<anonymous> (E:\Vue\myvue\node_modules\webpack\bin\webpack.js:155:2)

    at Module._compile (internal/modules/cjs/loader.js:688:30)

    at Object.Module._extensions..js (internal/modules/cjs/loader.js:699:10)

    at Module.load (internal/modules/cjs/loader.js:598:32)

    at tryModuleLoad (internal/modules/cjs/loader.js:537:12)

    at Function.Module._load (internal/modules/cjs/loader.js:529:3)

    at Function.Module.runMain (internal/modules/cjs/loader.js:741:12)

    at startup (internal/bootstrap/node.js:285:19)

    at bootstrapNodeJSCore (internal/bootstrap/node.js:739:3)

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! myvue@1.0.0 build: `webpack --config webpack.config.js`

npm ERR! Exit status 1

npm ERR!

npm ERR! Failed at the myvue@1.0.0 build 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!     D:\program files(86)\nodejs\node_cache\_logs\2018-12-11T09_10_17_987Z-debug.log

不知道问题出在哪里