Fix the unit tests.

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/Domain/Repositories/EntityFrameworkCore/EfCoreRepository.cs

@@ -1,4 +1,4 @@
-using JetBrains.Annotations;
+using JetBrains.Annotations;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
@@ -33,7 +33,7 @@ namespace Volo.Abp.Domain.Repositories.EntityFrameworkCore
 
         public virtual IGuidGenerator GuidGenerator => LazyServiceProvider.LazyGetService<IGuidGenerator>(SimpleGuidGenerator.Instance);
 
-        public IEfCoreBulkOperationProvider BulkOperationProvider => LazyServiceProvider.LazyGetRequiredService<IEfCoreBulkOperationProvider>();
+        public IEfCoreBulkOperationProvider BulkOperationProvider => LazyServiceProvider.LazyGetService<IEfCoreBulkOperationProvider>();
 
         public EfCoreRepository(IDbContextProvider<TDbContext> dbContextProvider)
         {

framework/src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/AbpDbContext.cs

@@ -562,7 +562,7 @@ namespace Volo.Abp.EntityFrameworkCore
                 !typeof(TEntity).IsDefined(typeof(OwnedAttribute), true) &&
                 !mutableEntityType.IsOwned())
             {
-                if (Clock == null || !Clock.SupportsMultipleTimezone)
+                if (LazyServiceProvider == null || Clock == null || !Clock.SupportsMultipleTimezone)
                 {
                     return;
                 }