public async Task <IActionResult> AddLinkToCourse([FromBody] string _CourseName)
        {
            try
            {
                var CourseID      = _courseService.GetCourseIdByName(_CourseName);
                var UserID        = Guid.Parse(User.GetLoggedInUserId <string>());
                var TeacherID     = _teacherService.GetTeacherIDByUserID(UserID);
                var teacherCourse = await _teacherService.AddLinkToCourse(CourseID, TeacherID);

                return(Ok("Link Added"));
            }
            catch (Exception e)
            {
                return(BadRequest(e.Message));
            }
        }