Help... what happen with user manager RB1200 ROS 5.21

For 1 year running with RB450G and change to RB1200 because I need license 6. Sometime error for user manager ROS 5.20 & I hope fixed in 5.21 :frowning: :frowning: . Fatal error for this night like my picture…What happen with my RB1200?
asem1.JPG