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 ('6bfb7b3e109a7d35d1d697eb80da03ad','0','3.144.97.204','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715527610','board.php?boardid=272&sid=e1747baf3a92b417977022f40fb58cdc','0','0','')
mysql error: Duplicate entry '6bfb7b3e109a7d35d1d697eb80da03ad' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 17:26
Script: /board.php?boardid=272&sid=e1747baf3a92b417977022f40fb58cdc
Referer: