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 ('448c411c70daf3d3bd863edd93877124','0','18.191.168.83','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715626360','board.php?boardid=197&sid=3c2b4adb2506fc10ddceb3295c5417c2','0','0','')
mysql error: Duplicate entry '448c411c70daf3d3bd863edd93877124' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 20:52
Script: /board.php?boardid=197&sid=3c2b4adb2506fc10ddceb3295c5417c2
Referer: http://wehrbauten.de/board.php?boardid=197&sid=3c2b4adb2506fc10ddceb3295c5417c2