diff --git a/Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs b/Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs
index cdb2f1bb..3dfeac33 100644
--- a/Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs
+++ b/Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs
@@ -202,7 +202,7 @@ public class WorkGridScheduleService : IWorkGridScheduleService
     /// <inheritdoc />
     public async Task ManuallyUploadAsync(List<long> logIds)
     {
-        const string filterString = "{{\"IsError\":true";
+        const string filterString = "{\"IsError\":true";
 
         var requests = await _dbContext.Queryable<DeviceUploadLogEntity>()
             .LeftJoin<DeviceEntity>((x, device) => x.DeviceUniqueNo == device.UniqueNo)