SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: SELECT * FROM bb1_info_hoerspiele WHERE threadid = LIMIT 1
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 'LIMIT 1' at line 1
mysql error number: 1064
mysql version: 10.5.29-MariaDB-0+deb11u1-log
php version: 5.6.40
Date: 10.07.2025 @ 06:51
Script: /thread.php?hsp_id=1087&sid=efb01b10d194f1f3c5637778c81a5565
Referer: