User creation does not work on laravel 5.1

actually i try to migrate some users from a excel file (.xlsx) to login in my aplication. But the code doesn't work. The strange part is that the same code it's implemented for migrate payroll from a excel file (.xlsx) and this one work. I try many options, change some code, but it doesn't work. Maybe I'm letting some error out and someone else can see it. I would appreciate the help.

My ImportController.php from users

public function cargar_datos_users(Request $request)
    {
        $file= $request->file('file');
        $original_name=$file->getClientOriginalName();
        $r1=Storage::disk('files')->put($original_name,  \File::get($file) );
        $route=  storage_path('files') ."/". $original_name;
        if($r1)
        {
            Excel::selectSheetsByIndex(0)->load($route, function($sheet)
            {
                $sheet->each(function($row)
            {
                $user = new User;
                $user->full_name = $row->nombreempleado;
                $user->user = $row->empleado;
                $user->password = bcrypt($row->empleado);
                $perfil = 1;
                $user->perfil = $perfil;
                $user->save();
            });
            return view("administrator.contracts.adminpayrolls")->with("msj","Usuarios Cargados Correctamente");             
        }
        else
        {
            return view("administrator.contracts.adminpayrolls")->with("msj","Error al subir el archivo");
        }
    }

My ImportController.php from payroll

public function cargar_datos_payrolls(Request $request)
    {
        $file= $request->file('file');
        $original_name=$file->getClientOriginalName();
        $r1=Storage::disk('files')->put($original_name,  \File::get($file) );
        $route=  storage_path('files') ."/". $original_name;
        if($r1)
        {
            Excel::selectSheetsByIndex(0)->load($route, function($sheet)
            {
                $sheet->each(function($row)
                {
                    $payroll = new Payroll;                                             
                    $payroll->lapso = $row->lapso;
                    $payroll->concept_payroll = $row->conceptonomina;
                    $payroll->payroll_concept_name = $row->nombreconceptonomina;
                    $payroll->id_employee = $row->empleado;
                    $payroll->hours = $row->horas;
                    $payroll->value = $row->valor;
                    $payroll->date_generation = $row->fechageneracion;
                    $payroll->date_from = $row->fechadesde;
                    $payroll->date_to = $row->fechahasta;
                    $payroll->balance_fee = $row->saldocuota;
                    $estado = 1;
                    $payroll->estado = $estado;
                    $payroll->save();
                });
            });
            return view("administrator.contracts.adminpayrolls")->with("msj","Usuarios Cargados Correctamente");             
        }
        else
        {
            return view("administrator.contracts.adminpayrolls")->with("msj","Error al subir el archivo");
        }
    }

My app/User.php

class User extends Model implements AuthenticatableContract, AuthorizableContract, CanResetPasswordContract
{
    use Authenticatable, Authorizable, CanResetPassword;

    protected $table = 'users';

    protected $fillable = ['full_name', 'user', 'password','perfil'];

    protected $hidden = ['password', 'remember_token'];
}

The plugin for migrate from excel is http://ift.tt/1n2QXpH As I said, the same structure work on payroll migrate, but don't work on users migrate, any comments will be appreciate.

via Chebli Mohamed