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 ('8bdce480327f12e8ba0023b5cd481e75','0','18.191.102.112','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714891623','board.php?boardid=627&sid=6abab7cf47d1e85f6269ed48c52d0447','0','0','')
mysql error: Duplicate entry '8bdce480327f12e8ba0023b5cd481e75' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 08:47
Script: /board.php?boardid=627&sid=6abab7cf47d1e85f6269ed48c52d0447
Referer: http://wehrbauten.de/board.php?boardid=627&sid=6abab7cf47d1e85f6269ed48c52d0447