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 ('5a87036228c03e412092a5bd0b6e11fe','0','18.222.117.109','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714652666','board.php?boardid=91&sid=935d65b46e110eb0509e48f505944a5f','0','0','')
mysql error: Duplicate entry '5a87036228c03e412092a5bd0b6e11fe' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 14:24
Script: /board.php?boardid=91&sid=935d65b46e110eb0509e48f505944a5f
Referer: http://wehrbauten.de/board.php?boardid=91&sid=935d65b46e110eb0509e48f505944a5f