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 ('76b6853c1771840f1a32f31eac0a4d16','0','18.118.1.158','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715127055','thread.php?threadid=1057&threadview=0&hilight=&hilightuser=0&sid=1672f444f6c1a89e7981c5551d3e6fbd','0','0','')
mysql error: Duplicate entry '76b6853c1771840f1a32f31eac0a4d16' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 02:10
Script: /thread.php?threadid=1057&threadview=0&hilight=&hilightuser=0&sid=1672f444f6c1a89e7981c5551d3e6fbd
Referer: