There was an error running the selected code generator: 'Package restore failed'.Rolling back package changes for 'BankAccount'

2
votes

I have created new ASP .Net Core app named 'BankAccount' and when i used to create controller of type 'API controller with actions , using Entity Framework', it gives me the following error => There was an error running the selected code generator: 'Package restore failed'.Rolling back package changes for 'BankAccount'

Here is the version of all my dependencies 

 <Project Sdk="Microsoft.NET.Sdk.Web">

 <PropertyGroup>
   <TargetFramework>netcoreapp2.1</TargetFramework>
 </PropertyGroup>

 <ItemGroup>
   <Folder Include="wwwroot\" />
 </ItemGroup>

   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Razor.Language" Version="2.1.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.1.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.1.0" />
     <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration" Version="2.1.0" />
     <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.1.0" />
  </ItemGroup>

 </Project>

This is Visual Studio 2019 Preview Version and here is screenshot of the error:

enter image description here

1
asp.netasp.net-core
the problem is with the Microsoft.VisualStudio.Web.CodeGeneration and Microsoft.VisualStudio.Web.CodeGeneration. try to change their version. – Muhammad Aftab
how the name of both of them is the same ?! – Ramy Ayman
second one is Microsoft.VisualStudio.Web.Design – Muhammad Aftab
it gives me two errors about version conflict with aspNetCore 2.1.0 – Ramy Ayman
I had the issue in scaffolding identity in blazor project. My issue resolved by updating my nuget packages. – Tauqir Rao

1 Answers

1
votes

I had the same issue. I downgranded the Microsoft.EntityFrameworkCore.Tools and Microsoft.EntityFrameworkCore.SqlServer to 5.0.4 and problem solved.