SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: UPDATE bb1_sessions SET lastactivity = '1748703603', request_uri = 'ct_mail.php?Page=210540516', boardid='0', threadid='0' WHERE sessionhash = 'aa463b7b3d0809afaa5bd6de6a4d0bae'
mysql error: Deadlock found when trying to get lock; try restarting transaction
mysql error number: 1213
mysql version: 5.7.42-log
php version: 5.6.40
Date: 31.05.2025 @ 17:00
Script: /ct_mail.php?Page=210540516
Referer: