Update nuxt.config.js

nuxt.config.js

@@ -52,7 +52,7 @@ module.exports = {
         }
     },
     env: {
-      host:"https://xxtest.upyuns.com"
+      host:((process.env.host == undefind || process.env.host=="")?"https://xxtest.upyuns.com":process.env.host)
     },
     generate: {
       routes: [