Thiss error keeps popping up the screen goes blank on flipping the screen or closing it I am using a galaxy z flip 4 Can some one please advice as to what can be done 

Is any one facing ui crashinh issues after recently upgrading sofware tobthe november pach This issue has started occuring on my galaxy flip 4 It goes blank and turns on again after a few secods on trying the on off button and whe. It stastes the err...