public async Task <ActionResult <Customer> > GetCustomer(int id)
        {
            try
            {
                var result = await _customerRepo.FindByID(id);

                if (result == null)
                {
                    return(NotFound($"Customer with ID = {id} not found !"));
                }

                return(result);
            }
            catch (Exception)
            {
                return(StatusCode(StatusCodes.Status500InternalServerError));

                throw;
            }
        }