修改任务台BC变更结果查询

Myshipping.Application/Service/BookingSlot/BookingSlotService.cs

@@ -1168,7 +1168,12 @@ namespace Myshipping.Application
                 throw Oops.Oh($"获取舱位变更比对结果错误，比对内容不存在");
             }
 
-            return JSON.Deserialize<List<CompareResultDetailInfo>>(compareInfo.COMPARE_RLT);
+            if(!string.IsNullOrWhiteSpace(compareInfo.COMPARE_RLT))
+            {
+                return JSON.Deserialize<List<CompareResultDetailInfo>>(compareInfo.COMPARE_RLT);
+            }
+
+            return new List<CompareResultDetailInfo>();
         }
         #endregion