控制台报错，不是很明白什么错

ERROR  Failed to compile with 2 errors                                                                                                                       18:12:48

This dependency was not found:

* babel-polyfill in ./src/main.js

To install it, you can run: npm install --save babel-polyfill

This relative module was not found:

* ./assets/logo.png in ./node_modules/_vue-loader@13.7.3@vue-loader/lib/template-compiler?{"id":"data-v-7ba5bd90","hasScoped":false,"transformToRequire":{"video":["src","poster"],"source":"src","img":"src","image":"xlink:href"},"buble":{"transforms":{}}}!./node_modules/_vue-loader@13.7.3@vue-loader/lib/selector.js?type=template&index=0!./src/App.vue