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 ('4e97f92f27e721a89ee7a56041cf2da3','0','3.147.66.178','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714007547','board.php?boardid=473&sid=d737c37e0e40ecbc559899279979ed01','0','0','')
mysql error: Duplicate entry '4e97f92f27e721a89ee7a56041cf2da3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 25.04.2024 @ 03:12
Script: /board.php?boardid=473&sid=d737c37e0e40ecbc559899279979ed01
Referer: http://wehrbauten.de/board.php?boardid=473&sid=d737c37e0e40ecbc559899279979ed01