diff --git a/SGGL/BLL/BLL.csproj b/SGGL/BLL/BLL.csproj
index fdbed387..37ba5c46 100644
--- a/SGGL/BLL/BLL.csproj
+++ b/SGGL/BLL/BLL.csproj
@@ -63,9 +63,8 @@
     <Reference Include="Microsoft.Bcl.AsyncInterfaces, Version=5.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
       <HintPath>..\packages\Microsoft.Bcl.AsyncInterfaces.5.0.0\lib\net461\Microsoft.Bcl.AsyncInterfaces.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.Extensions.Logging.Abstractions, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\packages\Microsoft.Extensions.Logging.Abstractions.2.1.1\lib\netstandard2.0\Microsoft.Extensions.Logging.Abstractions.dll</HintPath>
-      <Private>True</Private>
+    <Reference Include="Microsoft.Extensions.Logging.Abstractions, Version=6.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
+      <HintPath>..\packages\Microsoft.Extensions.Logging.Abstractions.6.0.0\lib\net461\Microsoft.Extensions.Logging.Abstractions.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.QualityTools.Testing.Fakes, Version=12.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
@@ -1078,12 +1077,6 @@
   <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Import Project="..\packages\Microsoft.Extensions.Logging.Abstractions.6.0.0\build\Microsoft.Extensions.Logging.Abstractions.targets" Condition="Exists('..\packages\Microsoft.Extensions.Logging.Abstractions.6.0.0\build\Microsoft.Extensions.Logging.Abstractions.targets')" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>这台计算机上缺少此项目引用的 NuGet 程序包。使用“NuGet 程序包还原”可下载这些程序包。有关更多信息，请参见 http://go.microsoft.com/fwlink/?LinkID=322105。缺少的文件是 {0}。</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Microsoft.Extensions.Logging.Abstractions.6.0.0\build\Microsoft.Extensions.Logging.Abstractions.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.Extensions.Logging.Abstractions.6.0.0\build\Microsoft.Extensions.Logging.Abstractions.targets'))" />
-  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">