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 ('b6863ae245c5ec1c844f40dabb898248','0','18.217.116.183','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)','1713539320','board.php?boardid=63&sid=2452585b2981c85a1b3e9475366be739','0','0','')
mysql error: Duplicate entry 'b6863ae245c5ec1c844f40dabb898248' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44
php version: 5.2.17
Date: 19.04.2024 @ 17:08
Script: /board.php?boardid=63&sid=2452585b2981c85a1b3e9475366be739
Referer: http://your-wbb.de/board.php?boardid=63&sid=2452585b2981c85a1b3e9475366be739