SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl 2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('96d420576f4da60bfa87b20075705ebe','0','13.59.36.203','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)','1713853495','calendar.php?action=viewbirthdays&day=2022-5-12&sid=8a9c9f61044f2eb3a067559c733820bb','0','0','')
mysql error: Duplicate entry '96d420576f4da60bfa87b20075705ebe' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44
php version: 5.2.17
Date: 23.04.2024 @ 08:24
Script: /calendar.php?action=viewbirthdays&day=2022-5-12&sid=8a9c9f61044f2eb3a067559c733820bb
Referer: