vue ssr app is crash

[konojunya]

https://express-via-functions.netlify.com/.netlify/functions/vue-ssr

app crashing

{"errorMessage":"Cannot read property 'default' of undefined","errorType":"TypeError","stackTrace":["__webpack_require__ (/var/task/vue-ssr.js:20:30)","/var/task/vue-ssr.js:63:18","Object.<anonymous> (/var/task/vue-ssr.js:66:10)","Module._compile (module.js:652:30)","Object.Module._extensions..js (module.js:663:10)","Module.load (module.js:565:32)","tryModuleLoad (module.js:505:12)","Function.Module._load (module.js:497:3)","Module.require (module.js:596:17)"]}