修复旧数据中已经确收但是没有与OA对应，付款单号报错的问题

application/em/controller/Payment.php

@@ -263,6 +263,8 @@ class Payment extends Base
             $fkModel = EmPaymentFk::get(['payment_id'=>$payment->payment_id]);
             if(!$fkModel) {
                 $fkModel = new EmPaymentFk();
+                $fkModel->oafk_numb = '';
+                $fkModel->link = '';
                 $fkModel->oafk_id = '';
             }
             $fkModel->link = config('oafk.base_url').config('oafk.link') . $fkModel->oafk_id;