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 ('5ff595738765514b2a1426a0098e7fd4','0','3.141.100.120','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)','1713962376','board.php?boardid=166&sid=b7de4a887ad4ab1af79a854699f208c7','0','0','')
mysql error: Duplicate entry '5ff595738765514b2a1426a0098e7fd4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44
php version: 5.2.17
Date: 24.04.2024 @ 14:39
Script: /board.php?boardid=166&sid=b7de4a887ad4ab1af79a854699f208c7
Referer: http://your-wbb.de/board.php?boardid=166&sid=b7de4a887ad4ab1af79a854699f208c7