SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: UPDATE bb1_guthaben_bank SET akt_jahr='2025', crashtag='242', boersencrash='0',boersencrashdate = '', boersencrashaktienwert='', boersencrashprozent='',boersencrashaktienwertneu='' WHERE bankid='1'
mysql error: Incorrect integer value: '' for column `web467_1`.`bb1_guthaben_bank`.`boersencrashaktienwert` at row 1
mysql error number: 1366
mysql version: 10.5.26-MariaDB-0+deb11u2
php version: 5.6.40-0+deb8u12
Date: 19.01.2025 @ 01:36
Script: /login.php?sid=450f0440888457c2f714abcfd9590df7
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