Scheduling in laravel

Im running into a problem with a schedule.

I have a XML which needs to run every 5 minutes and check if a new user has been added to the XML.

My kernel to trigger the schedule:

protected function schedule(Schedule $schedule)
{
    $schedule->call('App\Http\Controllers\UsersController@importDebtorsXML')->name('importdebtorsXML');
}

The controller which runs the XML:

public function importDebtorsXML() {

    $xml = simplexml_load_file(base_path('/xmlpath'));
    foreach($xml->Accounts->Account as $account){
        $accountcode = (string) $account["code"];

        $users = User::all();
        foreach($users as $user) {
            if($user->username == $accountcode) {
                dd('skip');
            }
        }
    }
}

The foreach Accounts from the XML runs perfectly. But it doens't run the second foreach inside this foreach...

If i :

dd($users[2]);

Beneath the $users it works.

It just doesn't run the foreach..

Any help is appreciated.

via Jordy Groote