SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: SELECT * FROM bb1_posts WHERE postid = '200939'
mysql error: Can't open file: './usr_web1_2/bb1_posts.frm' (errno: 24)
mysql error number: 1016
mysql version: 5.5.47-0+deb6u1-log
php version: 5.3.3-7+squeeze29
Date: 05.07.2020 @ 06:01
Script: /addreply.php?action=quote&postid=200939
Referer: