Laravel 5.7 queue is not processing jobs. I change queue driver to database

[pratiksuthar8032]

MY QUEUE FILE public $tries = 3; public function __construct($key,$studentid) { $this->Studentid = $studentid; $this->key = $key; }

/**
 * Execute the job.
 *
 * @return void
 */
public function handle()
{

    $key = [
              'key'  => $this->key,
          ];
    $StudentEmail = $this->Studentid;
    Mail::to($StudentEmail)->send(new LinkEmail($key));
}

MY CONTROLLER FILE

      $job = (new SendEmailjob($randomKey,$StudentEmail))
                ->delay(Carbon::now()->addSecond(20));

        dispatch($job); 

[tomschlick]

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