A Database Error Occurred

Error Number: 1191

Can't find FULLTEXT index matching the column list

(SELECT *,MATCH(title,tag) AGAINST('Billie Eilish - Lovely Sad, Emotional, Lyrical, Billie Eilish\r\n')+1 as score FROM `full_screen_videostatus` where id <> 20732 AND status='show' AND action='approved' AND language like '%English%')UNION(SELECT *,MATCH(title,tag) AGAINST('Billie Eilish - Lovely Sad, Emotional, Lyrical, Billie Eilish\r\n')+1 as score FROM `video_status` where status='show' AND action='approved' AND language like '%English%')ORDER BY score DESC LIMIT 0,20

Filename: models/Video_view_m.php

Line Number: 45