diff --git a/VOL.Ai/Services/AiAppService.cs b/VOL.Ai/Services/AiAppService.cs
index ae07020..104ca08 100644
--- a/VOL.Ai/Services/AiAppService.cs
+++ b/VOL.Ai/Services/AiAppService.cs
@@ -1424,7 +1424,7 @@ namespace VOL.Ai.Services
             var res = new GetClassReportDetailsModel();
 
             var query = from hrd in _teacherRepository.DbContext.Set<Ai_HeartRateData>() 
-                        where  hrd.ClassRoomRecordId == paramDto.ClassRoomRecordId && 
+                        where  hrd.ClassRoomRecordId == paramDto.ClassRoomRecordId && hrd.
                         select hrd;
 
             var heartRateDataList = await query.ToListAsync();