SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_kontoauszug (userid,datum,info,betrag,art) VALUES ('','1715724000','Im Lotto gewonnen','10','plus')
mysql error: Incorrect integer value: '' for column `retterradio_db3`.`bb1_kontoauszug`.`userid` at row 1
mysql error number: 1366
mysql version: 10.11.6-MariaDB-0+deb12u1
php version: 7.4.33
Date: 15.05.2024 @ 00:00
Script: /index.php?sid=11588f50b97cf253a0c195372001c5a3
Referer: http://www.home4players.com/index.php?sid=11588f50b97cf253a0c195372001c5a3