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 ('4f68724545708a3eeac82f5a193297d3','0','3.21.93.168','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715471156','search.php?sid=24607be5fbb2de5abd7cf2fcd0a271ee','0','0','')
mysql error: Duplicate entry '4f68724545708a3eeac82f5a193297d3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 01:45
Script: /search.php?sid=24607be5fbb2de5abd7cf2fcd0a271ee
Referer: http://wehrbauten.de/search.php?sid=24607be5fbb2de5abd7cf2fcd0a271ee