name : ExtendedQueueable.php <?php namespace Maatwebsite\Excel\Jobs; use Illuminate\Bus\Queueable; trait ExtendedQueueable { use Queueable { chain as originalChain; } /** * @param $chain * @return $this */ public function chain($chain) { collect($chain)->each(function ($job) { $serialized = method_exists($this, 'serializeJob') ? $this->serializeJob($job) : serialize($job); $this->chained[] = $serialized; }); return $this; } }