defaultear a localhost:3000 para API_HOST

src/store.js

@@ -5,7 +5,7 @@ import { registerWebpush } from './sjwManager'
 
 Vue.use(Vuex)
 
-const API_URL = process.env.API_URL
+const API_URL = process.env.API_URL || 'http://localhost:3000'
 
 const generateToken = (
   email = localStorage.email,