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 ('adf8d717879dea77fe01e6f08494d168','0','3.138.33.87','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714173678','board.php?boardid=595&sid=33634689bb60757d27174ed77fce024e','0','0','')
mysql error: Duplicate entry 'adf8d717879dea77fe01e6f08494d168' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 27.04.2024 @ 01:21
Script: /board.php?boardid=595&sid=33634689bb60757d27174ed77fce024e
Referer: http://wehrbauten.de/board.php?boardid=595&sid=33634689bb60757d27174ed77fce024e