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 ('3d3c7a9d697bb2e6eddd8f250d8941ad','0','3.141.47.221','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715155230','board.php?boardid=419&sid=71b27f8a0b74db03aaec8981b02878c7','0','0','')
mysql error: Duplicate entry '3d3c7a9d697bb2e6eddd8f250d8941ad' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 10:00
Script: /board.php?boardid=419&sid=71b27f8a0b74db03aaec8981b02878c7
Referer: