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 ('bc1b60972ec0de6920513d62b5e16207','0','18.117.152.214','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715719226','board.php?boardid=338&page=1&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=6ea1b179b4d66e282e730cf3c1a2c269','0','0','')
mysql error: Duplicate entry 'bc1b60972ec0de6920513d62b5e16207' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 22:40
Script: /board.php?boardid=338&page=1&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=6ea1b179b4d66e282e730cf3c1a2c269
Referer: http://wehrbauten.de/board.php?boardid=338&page=1&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=6ea1b179b4d66e282e730cf3c1a2c269