SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Invalid SQL: DELETE FROM bb42_sessions_day WHERE time<'1574290800'
mysql error: Out of resources when opening file './fh_netha/bb42_sessions_day.MYD' (Errcode: 24)
mysql error number: 23
Date: 21.11.2019 @ 15:40
Script: /v70/boards/42/thread.php?postid=65400
Referer: