System.MissingMethodException : Method not found: 'Microsoft.EntityFrameworkCore.Metadata.Builders.KeyBuilder

Question

Hi Team,

I am upgrading my project from .Net Core 3.1 to .Net 6, after updating below packages

1. Microsoft.EntityFrameworkCore version from 3.1.7 to 5.0.12
2. Microsoft.EntityFrameworkCore.InMemory version from 3.1.7 to 5.0.12

Then below error is coming.

System.MissingMethodException : Method not found: 'Microsoft.EntityFrameworkCore.Metadata.Builders.KeyBuilder
Microsoft.EntityFrameworkCore.Metadata.Builders.EntityTypeBuilder1.HasAlternateKey(System.Linq.Expressions.Expression1<System.Func`2<!0,System.Object>>)'.

Stack Trace: 
LibraryDbContextBase.ConfigureItemVersionEntity(ModelBuilder modelBuilder)
LibraryDbContextBase.OnModelCreatingStep1(ModelBuilder modelBuilder)
LibraryDbContextBase.OnModelCreating(ModelBuilder modelBuilder)
ModelCustomizer.Customize(ModelBuilder modelBuilder, DbContext context)
ModelSource.CreateModel(DbContext context, IConventionSetBuilder conventionSetBuilder, ModelDependencies modelDependencies)
ModelSource.GetModel(DbContext context, IConventionSetBuilder conventionSetBuilder, ModelDependencies modelDependencies)
DbContextServices.CreateModel()
DbContextServices.get_Model()
<>c.<TryAddCoreServices>b__7_3(IServiceProvider p)
CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
<19 more frames...>
InternalDbSet1.get_EntityType() InternalDbSet1.CheckState()
InternalDbSet1.get_EntityQueryable() IQueryable.get_Provider() Queryable.Any[TSource](IQueryable1 source)
LibraryContextSeedExtensions.SeedItemTypes(LibraryDbContextBase libraryDbContext)
LibraryContextSeedExtensions.GetInMemoryDbContext()
RepositoryTestsBase.ctor()
AbstractChangeSummaryRepositoryTest.ctor()
RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean wrapExceptions)