Laravel 5：mongoDB中的大量插入显示错误

I am using jenssegers package in Laravel 5 for mongodb. I am inserting multiple data in below described way and data is inserted successfully in mongodb but then it through error before the script completes.

$AllTrans=array();
$AllTrans[]=array("InvoiceID"=>1,"Amount"=>50);
$AllTrans[]=array("InvoiceID"=>2,"Amount"=>150);

$mongo_connnection->collection('invoices')->insert($AllTrans);

Here is the error:

MongoException in Collection.php line 42: 
No write ops were included in the batch

But i can not figure out problem, I have tried passing option like array('multi' => true) with insert query but it was not working.

It will work great with bulk addition, this way, you just need to create on array and pass it to it.

$temp = [
            [
                'item'=> "envelopes"
            ],
            [
                'item'=> "envelopesas"
            ],
            [
                'item'=> "lala"
            ]
        ];

        $userData = DB::table('log')->raw( function ( $collection ) use ($temp) {

            return $collection->insertMany($temp);
        });