保证开票用户不出错2

app/controller/api/InvoiceIssuance.php

@@ -190,6 +190,9 @@ class InvoiceIssuance extends Base
             $wechat_user_id = $this->request->wechat_user_id;
 
             $pucode = WechatPucode::where('wechat_user_id',$wechat_user_id)->order('create_time desc')->value('pucode');
+            if (!$pucode) {
+                throw new \Exception('请先绑定用户编号');
+            }
             $data = [
                 'wechat_user_id' => $wechat_user_id,
                 'project_id'     => $params['project_id'],