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 ('4b217123b50b200736bd2c700cb86873','0','18.223.107.149','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715425649','board.php?boardid=54&sid=b65c46004be1b2972fdfeba5b48c43c0','0','0','')
mysql error: Duplicate entry '4b217123b50b200736bd2c700cb86873' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 13:07
Script: /board.php?boardid=54&sid=b65c46004be1b2972fdfeba5b48c43c0
Referer: http://wehrbauten.de/board.php?boardid=54&sid=b65c46004be1b2972fdfeba5b48c43c0