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 ('6db5f237ba476e18ae4dd5fd57be0719','0','3.144.202.167','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714398284','board.php?boardid=22&daysprune=1000&sortfield=lastposttime&sortorder=DESC&page=1&sid=8810ab7b552fe6f049dedc95582ec724','0','0','')
mysql error: Duplicate entry '6db5f237ba476e18ae4dd5fd57be0719' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 29.04.2024 @ 15:44
Script: /board.php?boardid=22&daysprune=1000&sortfield=lastposttime&sortorder=DESC&page=1&sid=8810ab7b552fe6f049dedc95582ec724
Referer: