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 ('fa86c608ba38e34ea8a26162fed9a954','0','18.218.55.14','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714857296','board.php?boardid=142&daysprune=1000&sortfield=starter&sortorder=ASC&sid=c46dc018308bda8005da9c15502a69dc','0','0','')
mysql error: Duplicate entry 'fa86c608ba38e34ea8a26162fed9a954' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 23:14
Script: /board.php?boardid=142&daysprune=1000&sortfield=starter&sortorder=ASC&sid=c46dc018308bda8005da9c15502a69dc
Referer: http://wehrbauten.de/board.php?boardid=142&daysprune=1000&sortfield=starter&sortorder=ASC&sid=c46dc018308bda8005da9c15502a69dc