这是问题报错的代码，vue的源代码肯定没有问题，因为昨天都还可以用

D:\xiaowa-master>cnpm install

√ Installed 23 packages

√ Linked 0 latest versions

√ Run 0 scripts

√ All packages installed (used 198ms(network 187ms), speed 29.85kB/s, json 1(5.58kB), tarball 0B)

D:\xiaowa-master>npm run serve

hello-world@0.1.0 serve D:\xiaowa-master

vue-cli-service serve

internal/modules/cjs/loader.js:583

throw err;

^

Error: Cannot find module 'semver'

at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)

at Function.Module._load (internal/modules/cjs/loader.js:507:25)

at Module.require (internal/modules/cjs/loader.js:637:17)

at require (internal/modules/cjs/helpers.js:22:18)

at Object. (D:\xiaowa-master\node_modules_@vue_cli-service@3.11.0@@vue\cli-service\bin\vue-cli-service.js:3:16)

at Module._compile (internal/modules/cjs/loader.js:689:30)

at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)

at Module.load (internal/modules/cjs/loader.js:599:32)

at tryModuleLoad (internal/modules/cjs/loader.js:538:12)

at Function.Module._load (internal/modules/cjs/loader.js:530:3)

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! hello-world@0.1.0 serve:vue-cli-service serve

npm ERR! Exit status 1

npm ERR!

npm ERR! Failed at the hello-world@0.1.0 serve 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\1255109002\AppData\Roaming\npm-cache_logs\2019-08-30T08_57_09_953Z-debug.log

D:\xiaowa-master>

之前都正常，昨天电脑更新了一下，今天打开就不行了，有大哥懂原因的吗