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: 10.11.13-MariaDB-0ubuntu0.24.04.1-log
php version: 5.6.40-nmm10
Date: 10.07.2025 @ 00:34
Script: /wbb2/print.php?page=1&threadid=4880
Referer: