Merge remote-tracking branch 'origin/master'

service/service_price.go

@@ -391,6 +391,9 @@ func (ps *PriceService) GenerateLadderPrice(sku model.LySku) model.LySku {
 					if costMapIndex <= 0 {
 						costMapIndex = 0
 					}
+					if len(priceRatioList) < costMapIndex {
+						continue
+					}
 					priceRatio := priceRatioList[costMapIndex]
 					priceCnRatio := priceRatio.Ratio
 					priceUsRatio := priceRatio.RatioUsd