MIF_E31222596/website/config/fcm.php

<?php
return [
    'credentials' => [
        'file' => env('FCM_CREDENTIALS', storage_path('app/firebase/service-account.json')),
    ],
    'default' => [
        'sender_id' => env('FCM_SENDER_ID'),
        'server_key' => env('FCM_SERVER_KEY'),
    ],
];