修改

@@ -286,6 +286,11 @@ class Index extends Api
         $OrderSn = $this->order_sn();
         //押金
         $MoneyArr = Db::name('money_config')->where('battery_id', $params['battery_id'])->find();
+        $res111 = Db::name('agreement')->where('user_id', $UserId)->where('seller_id', $params['seller_id'])->find();
+        if (!empty($res111)) {
+            $this->error('禁止重复签订协议', 0);
+            die;
+        }
         $data = [
             'OrderSn' => $OrderSn,
             'user_id' => $UserId,