Revert css-loader's version from ^2.1.0 to ^0.28.7 because on ^2.1.0 the error of Module build failed: ValidationError: CSS Loader Invalid Options occurs

Author: nikukyugamer

package.json

@@ -29,7 +29,7 @@
     "babel-preset-env": "^1.6.0",
     "babel-preset-stage-3": "^6.24.1",
     "cross-env": "^5.0.5",
-    "css-loader": "^2.1.0",
+    "css-loader": "^0.28.7",
     "file-loader": "^1.1.4",
     "vue-loader": "^13.0.5",
     "vue-template-compiler": "^2.4.4",