src/Hotline.Share/Dtos/FlowEngine/DefinedStepDto.cs

@@ -17,7 +17,7 @@ namespace Hotline.Share.Dtos.FlowEngine
 
         public IReadOnlyList<StepBasicDto> Steps { get; set; }
 
-        public DateTime ExpiredTime { get; set; }
+        public DateTime? ExpiredTime { get; set; }
 
         public IReadOnlyList<string> Components { get; set; }