Efcore: Could not load Type

[aleksandarbalnozan]

After adding another Dbcontext i got this error
Could not load type 'Microsoft.EntityFrameworkCore.Infrastructure.IDbContextOptionsExtensionWithDebugInfo' from assembly 'Microsoft.EntityFrameworkCore, Version=3.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'

Code where error trigers:

services.AddDbContext<ApplicationDbContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

.csproj

`

<TargetFramework>netcoreapp3.0</TargetFramework>

<UserSecretsId>aspnet-ZavrsniRad01-F04B6A7E-6450-4254-8092-F42843F4615A</UserSecretsId>

<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="3.0.0-preview6.19307.2" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="3.0.0-preview6.19307.2" />
<PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="3.0.0-preview6.19307.2" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.0.0-preview.18572.1" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.0.0-preview6.19304.10" />
<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="3.0.0-preview6.19304.6" />
<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.0.0-preview6-19319-03" />

`

[smitpatel]

You need to align all the pages you are using from ASP.NET Core. Please use preview6 package for EFCore.SqlServer.

[aleksandarbalnozan]

Indeed, that solved my issue i had to install preview6 and now it works.
Thank you good man of GitHub.