send email to notify customer about china bankslip and instruction to upload po

app/Http/Controllers/ChinaBankSlipController.php

@@ -4,10 +4,12 @@ namespace App\Http\Controllers;
 
 use App\ChinaBankSlip;
 use App\Booking;
+use App\Notifications\UploadPo;
 use App\User;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Storage;
 use Validator;
+use Illuminate\Support\Facades\Notification;
 
 class ChinaBankSlipController extends Controller
 {
@@ -81,6 +83,8 @@ class ChinaBankSlipController extends Controller
 		$booking->admin_status = 6; 
 		$booking->save();
 
+        Notification::send([$booking->user], new UploadPo($booking));
+
         return response()->json(["message"=> "Success"],200);
     }
 

app/Notifications/UploadPo.php

@@ -31,6 +31,8 @@ class UploadPo extends Notification
      */
     public function toMail($notifiable)
     {
+        $notifiable->email = 'uldvstar@gmail.com';
+
         $message = new MailMessage;
         $message->subject('Upload PO - Exchange');
         $message->line('您好, 订单号 : '.$this->booking->id.' 的人民币汇款已成功。 请在这个网址 http://exchange.cief-malaysia.com/ 登录您的账号，并点击以下按钮，上载PO到系统. 谢谢.')