BUGFIX：创建优惠券设置开始结束时间失败;开启stripe模块的接口文档

src/main/java/com/ai/da/service/impl/StripeServiceImpl.java

@@ -1583,8 +1583,8 @@ public class StripeServiceImpl implements StripeService {
         if (Objects.nonNull(productCoupons)){
             // 2、查绑定的Coupons是否存在以及是否过期
             long epochSecondNow = Instant.now().getEpochSecond();
-            Long redeemBy = productCoupons.getRedeemBy();
-            if (redeemBy < epochSecondNow){
+//            Long redeemBy = productCoupons.getRedeemBy();
+            if (Objects.nonNull(productCoupons.getRedeemBy()) && productCoupons.getRedeemBy() < epochSecondNow){
                 String msg = BusinessException.getMessageFromResource("this.promotion.code.has.expired");
                 checkCouponsVO.setMessage(msg);
                 checkCouponsVO.setStatus("expired");