Laravel: error while seeding database from an url

I'm trying to seed my database table. I'm getting this following error.

public function run()
{
    //
    $json = file_get_contents('http://ift.tt/2qYRmDl');
    $emplois = json_decode($json);

    foreach ($emplois as $item) {
        Emploi::insert(
            array(
                array('JOBURL' => $item->JOBURL ),
                array('SALARYMAX' => $item->SALARYMAX ),
                array('SALARYMIN' => $item->SALARYMIN ),
                array('SALARYTYPE' => $item->SALARYTYPE ),
                array('NAME' => $item->NAME ),
                array('POSITION' => $item->POSITION ),
                array('JOBREF' => $item->JOBREF ),
                array('JOB_SUMMARY' => $item->JOB_SUMMARY ),
                array('POSTDATE' => $item->POSTDATE ),
                array('EXPIRYDATE' => $item->EXPIRYDATE ),
                array('KNOWLEDGE' => $item->KNOWLEDGE ),
                array('LANGUAGE_CERTIFICATES' => $item->LANGUAGE_CERTIFICATES ),
                array('EDUCATIONANDEXP' => $item->EDUCATIONANDEXP ),
                array('COMPANY_DESC' => $item->COMPANY_DESC ),
            ));
    }//end foreach

via Chebli Mohamed