列隊queue以及Job錯誤

在執行php artisan queue:work的時候不斷的出現
[2017-09-07 17:52:20] Processing: App\Jobs\MyJob
以下是MyJob.php的內容

<?php

namespace App\Jobs;

use Illuminate\Bus\Queueable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;

class MyJob implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    private $acc_token;
    private $sender;
    private $answer;
    private $file_type;
    private $file_url;
    private $response;
    private $ch;


    /**
     * Create a new job instance.
     *
     * @return void
     */
    public function __construct($acc_token, $sender, $answer, $file_type, $file_url)
    {
        $this->acc_token = $acc_token;
        $this->sender = $sender;
        $this->answer = $answer;
        $this->file_type = $file_type;
        $this->file_url = $file_url;
    }

    /**
     * Execute the job.
     *
     * @return void
     */
    public function handle($response, $ch)
    {
        $response = [
            'recipient' => [ 'id' => $this->sender ],
            'message' => [ 'text' => $this->answer ],
        ];
        $ch = curl_init('https://graph.facebook.com/v2.10/me/messages?access_token='.$this->acc_token);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($response));
        curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
        curl_exec($ch);
        curl_close($ch);
    }
}