SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: UPDATE bb1_guthaben_bank SET akt_jahr='2024', crashtag='51', boersencrash='0',boersencrashdate = '', boersencrashaktienwert='', boersencrashprozent='',boersencrashaktienwertneu='' WHERE bankid='1'
mysql error: Incorrect integer value: '' for column `retterradio_db2`.`bb1_guthaben_bank`.`boersencrashaktienwert` at row 1
mysql error number: 1366
mysql version: 10.11.6-MariaDB-0+deb12u1
php version: 7.4.33
Date: 29.03.2024 @ 00:00
Script: /search.php?sid=1129d4ded10a84c5944a8feff74b319a
Referer: http://www.feuerwehrlive.de/search.php?sid=1129d4ded10a84c5944a8feff74b319a