Update index.js

server/index.js

@@ -7,7 +7,7 @@ const { Nuxt, Builder } = require('nuxt')
 const PROXY_URL = 'http://elm-api.caibowen.net'; // 反向代理域名，生产
 
 const app = express()
-const port = process.env.PORT || 3001
+const port = process.env.PORT || 3000
 
 app.set('port', port)