src/Hotline/FlowEngine/Workflows/WorkflowTrace.cs

@@ -16,7 +16,7 @@ public class WorkflowTrace : StepBasicEntity
     /// <summary>
     /// 节点Id
     /// </summary>
-    public string StepId { get; set; }
+    public string? StepId { get; set; }
 
     /// <summary>
     /// 会签从属关系