FCM_SENDER_ID or FCM_SERVER_KEY are invalid

I've used Laravel-FCM to send notifications in my laravel application

this is my .env file

FCM_SERVER_KEY=AAAA5VxATP....AsjN9Rk5y29AocvQ
FCM_SENDER_ID=98.....62

and this is my fcm.php file

<?php

 return [
     'driver' => env('FCM_PROTOCOL', 'http'),
     'log_enabled' => true,

    'http' => [
        'server_key' => env('FCM_SERVER_KEY', 'AAAA5VxATPY:APA91bEDAx....nhvhLuAGs4sE_DjmAsjN9Rk5y29AocvQ'),
        'sender_id' => env('FCM_SENDER_ID', '98.....62'),
        'server_send_url' => 'https://fcm.googleapis.com/fcm/send',
        'server_group_url' => 'https://android.googleapis.com/gcm/notification',
        'timeout' => 30.0, // in second
    ],
];

It works fine in Postman, But in Laravel I'm getting this error: FCM_SENDER_ID or FCM_SERVER_KEY are invalid

Where am i going wrong?

via Chebli Mohamed