My custom plugin have wrong directory error and not showing under admin local plugins.

my custom plugin not showing under admin listing I tried with nopcommerce version 4.4 and 4.0.

My source code under plugin folder at root and after build it generate dll etc  at location Presentation\Nop.Web\Plugins\Url.Redirect

Now when debug  the code I get the following error.

maingPluginFile become null for my custom plugin in  and condition plugin have wrong directory executed. my plugin setting are perfectly same as other built in plugin have.

//plugin have wrong directory
if (mainPluginFile == null)
                            {
                                incompatiblePlugins.Add(pluginDescriptor.SystemName);
                                continue;
                            }

My plugin.Json file.

{
  "Group": "Url Redirect",
  "FriendlyName": "Url Redirect",
  "SystemName": "Url.Redirect",
  "Version": "1.34",
  "SupportedVersions": [ "4.00" ],
  "Author": "nopCommerce team",
  "DisplayOrder": 1,
  "FileName": "Nop.Plugin.Url.Redirecturl.dll",
  "Description": "This plugin offer url redirect"
}
my csproj file.

<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
  <PropertyGroup>
    <TargetFramework>net461</TargetFramework>
    <Copyright>Copyright © Nop Solutions, Ltd</Copyright>
    <Company>Nop Solutions, Ltd</Company>
    <Authors>Nop Solutions, Ltd</Authors>
    <Version>1.14</Version>
    <Description>This plugin allows to configure and manage pickup points when "Pickup in store" option is enabled</Description>
    <PackageLicenseUrl>
    </PackageLicenseUrl>
    <PackageProjectUrl>http://www.nopcommerce.com/</PackageProjectUrl>
    <RepositoryUrl>https://github.com/nopSolutions/nopCommerce</RepositoryUrl>
    <RepositoryType>Git</RepositoryType>
  </PropertyGroup>
  <ItemGroup>
    <None Remove="logo.png" />
    <None Remove="plugin.json" />
  </ItemGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
    <OutputPath>..\..\Presentation\Nop.Web\Plugins\Url.Redirect</OutputPath>
    <OutDir>$(OutputPath)</OutDir>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
    <OutputPath>..\..\Presentation\Nop.Web\Plugins\Url.Redirect</OutputPath>
    <OutDir>$(OutputPath)</OutDir>
  </PropertyGroup>
  <ItemGroup>
    <Content Include="plugin.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="..\..\Presentation\Nop.Web.Framework\Nop.Web.Framework.csproj" />
  </ItemGroup>
  <!-- This target execute after "Build" target -->
  <Target Name="NopTarget" AfterTargets="Build">
    <!-- Delete unnecessary libraries from plugins path -->
    <MSBuild Projects="$(MSBuildProjectDirectory)\..\..\Build\ClearPluginAssemblies.proj" Properties="PluginPath=$(MSBuildProjectDirectory)\$(OutDir)" Targets="NopClear" />
  </Target>
</Project>

{
...
  "SystemName": "Url.Redirect",
..
  "FileName": "Nop.Plugin.Url.Redirecturl.dll",
}

Should be

  "FileName": "Nop.Plugin.Url.Redirect.dll",

Thanks you very much sir. it works for me. Now I come to Know that what I was doing wrong.

Thanks.