缺失http-proxy依赖

package.json

@@ -9,6 +9,7 @@
     "bezier-easing": "^2.0.3",
     "cross-env": "^3.1.4",
     "express": "^4.14.1",
+    "http-proxy-middleware": "^0.17.4",
     "nuxt": "0.10.6",
     "vue-awesome-swiper": "^2.5.4"
   },