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 ('ca87256403ad49f3c6ab2779f3fe2588','0','18.188.142.146','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715155898','print.php?threadid=1052&page=1&sid=12ab6a94faf67f5eae4fdcf8411a006b','0','0','')
mysql error: Duplicate entry 'ca87256403ad49f3c6ab2779f3fe2588' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 10:11
Script: /print.php?threadid=1052&page=1&sid=12ab6a94faf67f5eae4fdcf8411a006b
Referer: http://wehrbauten.de/print.php?threadid=1052&page=1&sid=12ab6a94faf67f5eae4fdcf8411a006b