[Flutter] Laravel echo null and sockets in Flutter

So I was trying to use Laravel echo null package and it's connecting and it sends the data I give I can see it in the web version of the app which is built using vue js but here when I'm listening to the channel it doesn't print anything how can I listen to it correctly? and also this package has an issue with IOS it give me this error :

[!] No podspec found for `pusher_client_fixed` in `.symlinks/plugins/pusher_client_fixed/ios`


so do you know any other package to do the same? I tried using web sockets channel but it just says the connection was established Here's my code:

Echo<PusherClient, PusherChannel> echo =
Echo<PUSHER.PusherClient, PusherChannel>(PusherConnector(
'akm',
authEndPoint:
'https://api.akm-r.com/broadcasting/auth', // String?: auth host
authHeaders: {
// authenticate headers
'Authorization': 'Bearer ${Helpers.readUserData()?.token}',
'Content-Type': 'application/json',
'Accept': 'application/json',
},
// cluster: 'mt1', // String?: pusher cluster
host: 'api.akm-r.com',
wsPort: 443,
wssPort: 443,
encrypted: true,
activityTimeout: 120000,
pongTimeout: 30000,
maxReconnectionAttempts: 6,
maxReconnectGapInSeconds: 30,
enableLogging: true,
autoConnect: true, // bool: client connection automatically
// nameSpace: 'nameSpace',
));

_connect() {
print('soket id ${echo.socketId}');
echo.connect();
echo.private('session.11111').subscribe();
echo.private('session.11111').onSubscribedSuccess(() {
print('subscribe');
});
echo.private('session.11111').listen('drivers.11111', (d) {
print('listen $d');
}).listenForWhisper('drivers.11111', (d) {
print('here');
print('whisper $d');
}).error((e) {
print('error $e');
});
}

_send() {
UserData? user = Helpers.readUserData();
Map<String, dynamic> message = {"driver_mobile": user?.user?.mobile};
echo.private('session.11111').whisper('drivers.11111', message).error((e) {
print('error here');
print('error $e');
});
}

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