SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: UPDATE bb1_users SET last_ip = '3.133.131.168' wHERE userid = '0'
mysql error: Got error 24 "Too many open files" from storage engine MyISAM
mysql error number: 1030
mysql version: 10.0.32-MariaDB-0+deb8u1
php version: 5.6.33-0+deb8u1
Date: 24.04.2024 @ 06:30
Script: /board.php?boardid=164&sid=bb706807f160c0347a22cc72e75088d0
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