Mage2\Order\Controllers\Admin\OrderController::sendEmailInvoice PHP Method

    public function sendEmailInvoice($id)
    {
        $order = Order::findorfail($id);
        $user = User::find($order->user_id);
        $view = view('admin.order.pdf')->with('order', $order);
        $path = public_path('/uploads/order/invoice/' . $order->id . '.pdf');
        PDF::loadHTML($view->render())->save($path);
        Mail::to($user->email)->send(new OrderInvoicedMail($order, $path));
    }