Fixed a bug with webpack config

Author: jeremymccurdy-redspace

webpack.config.js

@@ -27,6 +27,8 @@ module.exports = (env) => {
   return {
     stats: 'errors-only',
 
+    mode: isProduction ? 'production':'development',
+
     devServer: {
       open: true,
       client: { overlay: true },