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 ('a7fa1403819fd755a81d79eda78e80b7','0','18.188.29.76','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715673409','board.php?boardid=481&sid=8fe33333842e1580b907bb26d1408182','0','0','')
mysql error: Duplicate entry 'a7fa1403819fd755a81d79eda78e80b7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 09:56
Script: /board.php?boardid=481&sid=8fe33333842e1580b907bb26d1408182
Referer: