The method 'skip' is only supported for sorted input in LINQ to entities. The method 'orderby' must be called before the method 'skip'.'

public virtual IEnumerable<TEntity> Get(int? page, Expression<Func<TEntity,bool>> filter = null, Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBy = null, string includeProperties = "")
        {
            IQueryable<TEntity> query = dbSet;
            if (filter != null)
            {
                query = query.Where(filter);
            }

            foreach (var includeProperty in includeProperties.Split
                (new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
            {
                query = query.Include(includeProperty);
            }

            if (orderBy != null)
            {
                return orderBy(query).ToPagedList(page ?? 1, 5);
                
            }
            else
            {
                
                return query.ToPagedList(page ?? 1, 5);
            }

        }