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 ('bafe76b06ae85a6d6dfd5dc48f84e8b0','0','18.224.246.203','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715141338','board.php?boardid=640&sid=5ea424c81b7065f6a8d3ecd2b7c2c5e4','0','0','')
mysql error: Duplicate entry 'bafe76b06ae85a6d6dfd5dc48f84e8b0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 06:08
Script: /board.php?boardid=640&sid=5ea424c81b7065f6a8d3ecd2b7c2c5e4
Referer: