‫بازنویسی سطح دوم کش برای Entity framework 6

 public async Task<IList<Bestankaran>> GetBestankaran()
        {
         EFCachePolicy expirationTime = new EFCachePolicy { AbsoluteExpiration = new DateTime().AddSeconds(60) };

            var result =
                Task.Run(() =>
                    _bestankaran.Cacheable(expirationTime).ToListAsync());

            return await result;
           
        }

  public IList<string> GetUserPermissions(int[] roleIds, int userId)
        {
            var permissionsOfRoles = (from p in _permissions
                                      from r in p.ApplicationRoles
                                      where roleIds.Contains(r.Id)
                                      select p.Name).Cacheable().Future();

            var permissionsOfUser = (from p in _permissions
                                     from r in p.AssignedUsers
                                     where userId == r.Id
                                     select p.Name).Cacheable().Future().ToList();
            return permissionsOfUser.Union(permissionsOfRoles).ToList();
        }

The source query must be of type ObjectQuery or DbQuery.
Parameter name: source

[ArgumentException: The source query must be of type ObjectQuery or DbQuery.
Parameter name: source]
   EntityFramework.Extensions.FutureExtensions.Future(IQueryable`1 source) +249

var li = _menus
              .Where(m => m.Disable == false && m.LanguageId == culture)
               .OrderBy(m => m.Order)
               //.Cacheable()
               .ToList()
               .Where(m => m.ParentId == null)
               .ToList();

//‍function in cache class
public IQueryable<T> FindAll(bool doCache)
        {
            if (doCache)
                return _repository.FindAll(doCache).Cacheable();
            else
                return _repository.FindAll(doCache);

        }

// دستور در کلاس سرویس
_cache.FindAll(true).Include(s=>s.Tag)

 context.DataBase.SqlQuery<x>("Test").Cachable()

var text= context.tbl1.Include(x => x.tbl2).Cacheable().FirstOrDefault();

        private readonly IDbSet<Hotel> _hotels;
            _hotels = _unitOfWork.Set<Hotel>();
         

   var autoCompletesViewModel = await _hotels.Include(row => row.Profile.City.State.Country).Where(row => row.IsApproved && row.Profile.IsDeleted == false && row.Profile.IsDeactivated == false).Cacheable().ProjectToListAsync<AutoCompleteHotelViewModel>(_mapper.ConfigurationProvider);

_uow.Set<Post>().Include(x => x.Comments).Cacheable().ToList()

System.NullReferenceException: Object reference not set to an instance of an object. at System.Data.Entity.Internal.Linq.InternalQuery`1.Include(String path) at System.Data.Entity.Infrastructure.DbQuery`1.Include(String path) at System.Data.Entity.QueryableExtensions.Include[T,TProperty](IQueryable`1 source, Expression`1 path)