[Vuejs]-Laravel Jetstream inertia ERR_CONNECTION_REFUSED (on fresh installation)

You can fix the problem by just disable the browser-sync feature. Remove these 2 lines from app.blade.php:

@env ('local')
    <script src="http://localhost:3000/browser-sync/browser-sync-client.js"></script>
@endenv

You can fix the problem with Vue.js Devtools by installing the beta (Vue 3) extension: https://chrome.google.com/webstore/detail/vuejs-devtools/ljjemllljcmogpfapbkkighbhhppjdbg