ERROR: Unable to execute query

SELECT v.* FROM `videos` AS `v`,`video_responses` AS `vr` WHERE vr.video_response_to_video_id='1807' AND vr.video_response_active='1' AND vr.video_response_video_id=v.video_id ORDER BY vr.video_response_add_time DESC LIMIT 5Table 'accoun_tubex.video_responses' doesn't exist

how to fix that?