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 ('ac6761d8bba2b749885d10222b55d882','0','3.129.22.135','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715207709','search.php?sid=a355da061c8f4c20a7177630b273ae7b','0','0','')
mysql error: Duplicate entry 'ac6761d8bba2b749885d10222b55d882' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 00:35
Script: /search.php?sid=a355da061c8f4c20a7177630b273ae7b
Referer: http://wehrbauten.de/search.php?sid=a355da061c8f4c20a7177630b273ae7b