推进器无法连接到LARAVEL 5.8

我用拉拉维尔5.4推杆,没有问题,但现在我尝试使用拉拉维尔5.8,我得到以下错误。我想尽了一切办法甚至改变了 encrypted 到 false 以防万一。我三次检查了我的推手证书。

拉弗版 5.8

PHP版本 7.2.18

操作系统 OSX

我得到的错误

$response = $this->pusher->trigger(
            $this->formatChannels($channels), $event, $payload, $socket, true
        );

        if ((is_array($response) && $response['status'] >= 200 && $response['status'] <= 299)
            || $response === true) {
            return;
        }

        throw new BroadcastException(
            is_bool($response) ? 'Failed to connect to Pusher.' : $response['body']
        );

我的EnV文件

BROADCAST_DRIVER=pusher
PUSHER_APP_ID=XXXXXX
PUSHER_APP_KEY=XXXXXXXXXXXXXXXXXXXX
PUSHER_APP_SECRET=XXXXXXXXXXXXXXXXXXXX
PUSHER_APP_CLUSTER=us2

我的事件文件

<?php

namespace App\Events;

use App\ChatRoomMessage;
use Illuminate\Broadcasting\Channel;
use Illuminate\Queue\SerializesModels;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Broadcasting\PresenceChannel;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;

class NewMessage implements ShouldBroadcast
{
    use Dispatchable, InteractsWithSockets, SerializesModels;


    /**
     * Create a new event instance.
     *
     * @param ChatRoomMessage $chatRoomMessage
     * @return void
     */
    public function __construct()
    {

    }

    /**
     * Get the channels the event should broadcast on.
     *
     * @return \Illuminate\Broadcasting\Channel|array
     */
    public function broadcastOn()
    {
        return new Channel('message');
    }
}

我的路线

Route::get('/broadcast', function() {
    event(new \App\Events\NewMessage);
});