[1350] nuxt build and start cannot load vue components properly

I am using nuxt@1.0.0-rc3 and koa template.
When I use npm run dev, web works properly.
After I npm run build && npm start, web is loaded without show error msg.
But the components like vue-recaptcha , vue-googlemap which work well in dev, now all broken and unseen.
How can I fix this?
Thanks