problem with create method of AsyncCrudAppService

I have a problem in create method AsyncCrudAppService, in SaveChangeAsync currentUserId set to 0 and in detail exception: The INSERT statement conflicted with the FOREIGN KEY constraint CreatorUserId". The conflict occurred in database “”, table ", column ‘Id’.

while my userId before calling SaveChange is 1. it is weird when I call Create method inner another service method here ‘CreateSuggestion’ and it works correctly.

public class KnowledgeManagementSuggestionAppService: AsyncCrudAppService<KnowledgeManagementSuggestion, KnowledgeManagementSuggestionDto>
    {
        public KnowledgeManagementSuggestionAppService(IRepository<KnowledgeManagementSuggestion, int> repository) : base(repository)
        {
        }
 public override async Task<KnowledgeManagementSuggestionDto> Create(KnowledgeManagementSuggestionDto input)
        {
            try
            {
                var userId = AbpSession.UserId; // 1
                var currentTenant = AbpSession.TenantId; //null

                var entity = MapToEntity(input);
                await Repository.InsertAsync(entity);
                await CurrentUnitOfWork.SaveChangesAsync(); //error because CreatorUserId is null

                return MapToEntityDto(entity);
            }
            catch (Exception e)
            {
                throw e;
            }
        }
    }

public Task<KnowledgeManagementSuggestionDto> CreateSuggestion(KnowledgeManagementSuggestionDto input)
        {
            return Create(input);
        }

[acjh]

Then set it to null.

[mehdihadeli]

Then set it to null.

thanks, it worked.