SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: SELECT threadid FROM bb1_announcements WHERE boardid='108'
mysql error: Can't open file: './usr_web1_2/bb1_announcements.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 @ 10:25
Script: /board.php?boardid=108&daysprune=1000&sortfield=lastposttime&sortorder=DESC&page=183
Referer: