IsTopCountersignEndStep

src/Hotline/FlowEngine/Workflows/WorkflowStep.cs

@@ -171,7 +171,9 @@ public class WorkflowStep : StepBasicEntity
     {
         // if (string.IsNullOrEmpty(topCountersignStepId))
         //     throw new UserFriendlyException($"无效顶级会签节点编号，wfId: {WorkflowId}");
-        return IsCountersignEndStep && CountersignStartStepId == topCountersignStepId;
+        return IsCountersignEndStep 
+               && !string.IsNullOrEmpty(topCountersignStepId)
+               && CountersignStartStepId == topCountersignStepId;
     }
 
     //public WorkflowStepHandler?