SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb2_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('4c682cdd4e703b6587bc91af1b85fd6b','0','3.145.163.58','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714983292','thread.php?threadid=8948&sid=acf6cd5e1ef26c035bd39ad673b7e016','0','0','')
mysql error: Duplicate entry '4c682cdd4e703b6587bc91af1b85fd6b' for key 1
mysql error number: 1062
mysql version: 4.1.22-standard
php version: 5.3.29-1+hw8
Date: 06.05.2024 @ 04:14
Script: /wbb2/thread.php?threadid=8948&sid=acf6cd5e1ef26c035bd39ad673b7e016
Referer: