public async Task <ActionResult <Meme> > DeleteMeme(int id)
        {
            try
            {
                // save
                await _memeService.DeleteMemeAsync(id);

                return(Ok());
            }
            catch (AppException ex)
            {
                // return error message if there was an exception
                return(BadRequest(new { message = ex.Message }));
            }
        }