'Method 'Create' in type - EntityFreamwork 5.0

[dikmenonur]

I use EntityFramework in my project and I also use PostgreSQL.
I updaated EFCore 5.0 I did
After doing Microsoft.EntityFrameworkCore.Relational Version : 5.0, I got the following error.

My project .csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp3.1</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="5.0.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Proxies" Version="5.0.0" />
    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="5.0.0" />
    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="5.0.0" />
    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
    <PackageReference Include="Npgsql" Version="4.1.5" />
    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="3.1.4" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\Spark.External.Manager\Spark.External.Manager.csproj" />
    <ProjectReference Include="..\Sparks.External.Core\Spark.External.Core.csproj" />
  </ItemGroup>

</Project>

`System.TypeLoadException: 'Method 'Create' in type 'Npgsql.EntityFrameworkCore.PostgreSQL.Query.Internal.NpgsqlSqlTranslatingExpressionVisitorFactory' from assembly 'Npgsql.EntityFrameworkCore.PostgreSQL, Version=3.1.4.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7' does not have an implementation.'

System.TypeLoadException
HResult=0x80131522
Message=Method 'Create' in type 'Npgsql.EntityFrameworkCore.PostgreSQL.Query.Internal.NpgsqlSqlTranslatingExpressionVisitorFactory' from assembly 'Npgsql.EntityFrameworkCore.PostgreSQL, Version=3.1.4.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7' does not have an implementation.
Source=Npgsql.EntityFrameworkCore.PostgreSQL
StackTrace:
at Microsoft.Extensions.DependencyInjection.NpgsqlServiceCollectionExtensions.AddEntityFrameworkNpgsql(IServiceCollection serviceCollection)
at Npgsql.EntityFrameworkCore.PostgreSQL.Infrastructure.Internal.NpgsqlOptionsExtension.ApplyServices(IServiceCollection services)
at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.ApplyServices(IDbContextOptions options, ServiceCollection services)
at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.<>c__DisplayClass4_0.g__BuildServiceProvider|3()
at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.<>c__DisplayClass4_0.b__2(Int64 k)
at System.Collections.Concurrent.ConcurrentDictionary2.GetOrAdd(TKey key, Func2 valueFactory)
at Microsoft.EntityFrameworkCore.Internal.ServiceProviderCache.GetOrAdd(IDbContextOptions options, Boolean providerRequired)
at Microsoft.EntityFrameworkCore.DbContext..ctor(DbContextOptions options)
at Spark.External.Core.DataSource.PostgresDbContext..ctor(DbContextOptions1 options) in D:\Git\Sparks.External\Sparks.External.Core\DataSource\PostgresDbContext.cs:line 12

[YohDeadfall]

You're mixing EF 3.1.4 and 5.0, so the error is expected. Please wait for the provider and the driver releases from us, it may take some time, but may happen today.

[dikmenonur]

thank you for information

[CumpsD]

🤞 looking forward to this too :)

[21:57:38 FTL] Host terminated unexpectedly
System.TypeLoadException: Method 'Create' in type 'Npgsql.EntityFrameworkCore.PostgreSQL.Query.Internal.NpgsqlSqlTranslatingExpressionVisitorFactory' from assembly 'Npgsql.EntityFrameworkCore.PostgreSQL, Version=3.1.4.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7' does not have an implementation.

[JulioPablo]

Any updates on this?

[vonzshik]

@JulioPablo EntityFrameworkCore.Postgresql 5.0 has been released on 15 of November.