Please goto wp-admin -> wplms -> buddypress -> " Instructor Description Field ". Add your instrcutor about field there .
It maybe Bio or something else you need to put the name in it (its case sensitive) /.
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After putting the field please make sure that your instructor must have filled some value in it .
If its added correctly and still facing this issue then please share your site url , admin credentials and a valid ftp credentials in private reply to check this issue at your end .