SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('abb07d40684f134163f9a6ab707326ed','0','216.73.216.96','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1758989402','ct_mail.php?Page=591074686','0','0','')
mysql error: Duplicate entry 'abb07d40684f134163f9a6ab707326ed' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 27.09.2025 @ 18:10
Script: /ct_mail.php?Page=591074686
Referer: