각 반별로 강의자료를 따로 올려야 하는데, 링크를 한꺼번에 올리면서 62명의 학생들이 한번에 출석체크를 하는 상황도 발생했다.
Each lecture material had to be uploaded separately per class, but there was a situation where 62 students checked attendance at once when the link was uploaded at once.