public IActionResult CreateTrainingPlan()
        {
            if (User.FindFirstValue(ClaimTypes.NameIdentifier) == null)
            {
                throw new Exception("UserId is null");
            }

            var createTrainingPlanViewMode = new CreateTrainingPlanViewModel()
            {
                ExercisesSelectList = _trainingPlanService.ShowAllExerciseInSelectList(),
                CreatorId           = User.FindFirstValue(ClaimTypes.NameIdentifier),
                UserName            = User.FindFirstValue(ClaimTypes.Name),
            };

            return(View(createTrainingPlanViewMode));
        }