Merge branch 'dev' of http://123.60.180.165:4647/ZZYDOP/DOPCore into dev

MicroServices/Business/Business.Application/ResourceExamineManagement/ProductionScheduleAppService.cs

@@ -4092,7 +4092,7 @@ namespace Business.ResourceExamineManagement
             int op = routing.OP;
             //排产任务执行时间
             DateTime actStart = scheTime;
-            if (workOrd.JointTyped.ToUpper() == "B")
+            if (!string.IsNullOrEmpty(workOrd.JointTyped) && workOrd.JointTyped.ToUpper() == "B")
             {
                 actStart = workOrd.OrdDate.GetValueOrDefault();
             }