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 ('8bbd1238342ef94100f5728320be3909','0','18.119.166.90','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715569061','board.php?boardid=38&sid=dc366466a9904e0e1b9cacf8e82a18fa','0','0','')
mysql error: Duplicate entry '8bbd1238342ef94100f5728320be3909' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 04:57
Script: /board.php?boardid=38&sid=dc366466a9904e0e1b9cacf8e82a18fa
Referer: http://wehrbauten.de/board.php?boardid=38&sid=dc366466a9904e0e1b9cacf8e82a18fa