public async Task <ActionResult <FavouriteTrainerDTO> > CreateFavouriteTrainer([FromBody] FavouriteTrainerDTO favourite) { try { var fav = await _favouriteService.CreateFavouriteTrainer(favourite); return(Ok(fav)); } catch (ArgumentException exception) { return(BadRequest(exception.Message)); } catch (Exception exception) { return(BadRequest(exception.Message)); } }