diff --git a/WarehouseMgr/Tnb.WarehouseMgr/TimedTaskBackgroundService.cs b/WarehouseMgr/Tnb.WarehouseMgr/TimedTaskBackgroundService.cs
index 7302eef3..65b20240 100644
--- a/WarehouseMgr/Tnb.WarehouseMgr/TimedTaskBackgroundService.cs
+++ b/WarehouseMgr/Tnb.WarehouseMgr/TimedTaskBackgroundService.cs
@@ -24,7 +24,6 @@ using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Options;
 using Natasha.CSharp;
-using Spire.Pdf.Widget;
 using Tnb.Common.Extension;
 using Tnb.WarehouseMgr.Entities.Attributes;
 using Tnb.WarehouseMgr.Entities.Dto.Inputs;