SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: SELECT boardid, title FROM bb2_boards WHERE boardid IN ()
mysql error: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ')' at line 1
mysql error number: 1064
mysql version: 10.5.23-MariaDB-1:10.5.23+maria~ubu2004-log
php version: 5.6.40-nmm8
Date: 19.05.2024 @ 01:26
Script: /wbb2/print.php?threadid=6066&page=1&sid=d450b068a662f73b7b54414c07618b07
Referer: