/pusher/auth endpoint returning 404 in Laravel

I have built a Laravel app where I am trying to implement Web Sockets via Pusher.com (for the first time).

While I have got public channel subscriptions working fine, I am struggling getting private channels working correctly.

According to the laravel documentation you need to uncomment App\Providers\BroadcastServiceProvider::class in app.php config file which I have.

My channels.php has the following rule(s)

Broadcast::channel('App.User.{id}', function ($user, $id) {
    return (int) $user->id === (int) $id;
});

Broadcast::channel('private-queue.business.{business}', function ($user, Business $business) {
    // @todo: add real authentication
    return true;
});

Is there anything else I need to add to get /pusher/auth endpoint working?

As of Laravel 7.x, the Broadcasting endpoint is broadcasting/auth and not pusher/auth.

I needed to update my JS like so to be able to define a custom auth endpoint:

const pusher = new Pusher('{{ env('PUSHER_APP_KEY') }}', {
    cluster: '{{ env('PUSHER_APP_CLUSTER') }}',
    authEndpoint: '/broadcasting/auth',
    auth: {
        headers: {
            'X-CSRF-TOKEN': '{{ csrf_token() }}',
        }
    }
});

You will need to add the CSRF-TOKEN otherwise you will get Page Expired errors.