npm run serve运行报错：
This may cause things to work incorrectly. Make sure to use the same version for both. If you are using vue-loader@>=10.0, simply update vue-template-compiler. If you are using vue-loader@<10.0 or vueify, re-installing vue-loader/vueify should bump vue-template-compiler to the latest.
问题： 版本不统一
解决：
删除node_models 文件夹和 package-lock.json 文件重新 npm install