SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.1.5): Invalid SQL: SELECT t.*, v.id AS isvoted FROM bb2_threads t LEFT JOIN bb2_votes v ON (v.id=t.threadid AND v.votemode=2 AND v.ipaddress='18.205.109.152') WHERE t.threadid = '60'
mysql error: Out of resources when opening file './usr_web1_15/bb2_votes.MYD' (Errcode: 24)
mysql error number: 23
mysql version: 5.5.47-0+deb6u1-log
php version: 5.3.3-7+squeeze29
Date: 07.07.2020 @ 15:42
Script: /thread.php?goto=lastpost&threadid=60
Referer: