httpContextAccessor null when called by service to applyBaseActions

I have a baseDbContext like this:

public abstract class BaseDbContext : DbContext
    {
        private IHttpContextAccessor _contextAccessor;

        private Guid tenantId => this.GetTenantId();
        private Guid tenantCountryId => this.GetTenantCountryId();
        private static MethodInfo ConfigureEntityDefaultsMethodInfo = typeof(BaseDbContext).GetMethod(nameof(ConfigureEntityDefaults), BindingFlags.Instance | BindingFlags.NonPublic);

        public BaseDbContext() { }
        public BaseDbContext(DbContextOptions<BaseDbContext> options, IHttpContextAccessor contextAccessor) : base(options)
        {
            _contextAccessor = contextAccessor;
        }
        public BaseDbContext(DbContextOptions options, IHttpContextAccessor contextAccessor) : base(options)
        {
            _contextAccessor = contextAccessor;
        }
        public BaseDbContext(DbContextOptions<HostDataContext> options, IHttpContextAccessor contextAccessor) : base(options)
        {
            _contextAccessor = contextAccessor;
        }

Basically my service is calling the saveChangesAsync() method in this class :

public override Task<int> SaveChangesAsync(CancellationToken cancellationToken = default(CancellationToken))
        {
            ApplyBaseEntityActions();
            return base.SaveChangesAsync(cancellationToken);
        }

        protected virtual void ApplyBaseEntityActions()
        {
            var userId = GetCurrentProfileId();

            foreach (var entry in ChangeTracker.Entries().ToList())
            {
                switch (entry.State)
                {
                    case EntityState.Added:
                        ApplyBaseEntityAddedActions(entry, userId);
                        break;
                    case EntityState.Modified:
                        ApplyBaseEntityUpdatedActions(entry, userId);
                        break;
                    case EntityState.Deleted:
                        ApplyBaseEntityDeletedActions(entry, userId);
                        break;
                }
            }
        }

protected virtual Guid GetCurrentProfileId()
        {
            Guid result = Guid.Empty;
            if (_contextAccessor != null && _contextAccessor.HttpContext != null)
            {
                result = _contextAccessor.HttpContext.GetProfileId();
            }

            return result;
        }

But when it reaches GetCurrentProfileID the _contextAccessor is null and so I am getting empty Guid Value.

Edit : This is how I am injecting the httpcontetAccessor to my class which is calling dbContext :

public SellRateService(

            EzyDataContext dbContext,
            IConfiguration config,
            IHttpContextAccessor contextAccessor,            ILogger<SellRateService> logger,
            IEmailHelper emailHelper )
        {
            _dbContext = dbContext;
            _config = config;
            _contextAccessor = contextAccessor;
            _logger = logger;
            _emailHelper = emailHelper;

        }

and this in services : services.AddHttpContextAccessor(); Can anyone please help on why the contextAccessor is null and and how should I remedy it. Thanks.