Problem connecting to Pusher with Laravel websockets (cURL error code 6)

[YonesSohrabi]

Have a nice day friends I ran into a problem that I can't solve, thank you for helping me to solve this problem. I am planning to use Laravel websocket to develop the notification section of the website But after sending the event, I get the following error : Error image

Illuminate\Broadcasting\BroadcastException
Pusher error: cURL error 6: Could not resolve host: eu (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://eu/apps/xxx/events?auth_key=xxx&auth_timestamp=xxx&auth_version=1.0&body_md5=xxx&auth_signature=xx.
The contents of the config file broadcasting.php: config/broadcasting.php

'connections' => [

'pusher' => [
    'driver' => 'pusher',
    'key' => env('PUSHER_APP_KEY'),
    'secret' => env('PUSHER_APP_SECRET'),
    'app_id' => env('PUSHER_APP_ID'),
    'options' => [
        'host' => env('PUSHER_HOST') ?: 'api-'.env('PUSHER_APP_CLUSTER', 'mt1').'.pusher.com',
        'port' => env('PUSHER_PORT', 443),
        'scheme' => env('PUSHER_SCHEME', 'https'),
        'encrypted' => true,
        'useTLS' => env('PUSHER_SCHEME', 'https') === 'https',
    ],
],  

],
and .env file : .env

PUSHER_APP_ID=xxxxxxx
PUSHER_APP_KEY=xxxxxxxxxxxxxx
PUSHER_APP_SECRET=xxxxxxxxxxxxxxx
PUSHER_HOST=eu
PUSHER_PORT=443
PUSHER_SCHEME=https
PUSHER_APP_CLUSTER=mt1
nslookup Command

Ping Command

I would be grateful if someone could help me.