A representative from LOEN Entertainment tweeted this incident and also পোষ্ট হয়েছে a picture of people trying to fix the door and get ইউ out of the room. Luckily it didn’t take too long to get ইউ out of it and she managed to perform well in M!Countdown.
Source: wowkeren.com
ছবি Credit: showasia.ru, kapanlagi.com