diff --git a/VideoAnalysisCore/Common/RedisExpand.cs b/VideoAnalysisCore/Common/RedisExpand.cs
index 630aaaa..b8a4911 100644
--- a/VideoAnalysisCore/Common/RedisExpand.cs
+++ b/VideoAnalysisCore/Common/RedisExpand.cs
@@ -184,7 +184,7 @@ namespace VideoAnalysisCore.Common
             }
             catch (Exception ex)
             {
-                await SetTaskErrorMessage((long)taskId, ex);
+                await SetTaskErrorMessage(long.Parse(tId), ex);
             }
         }