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 ('6c6934f7c0cd20d197e33c586d1b7a76','0','18.117.153.38','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714846729','search.php?action=user&userid=1&sid=bd560b2d3816fd1c87f3d53a598f3ff5','0','0','')
mysql error: Duplicate entry '6c6934f7c0cd20d197e33c586d1b7a76' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 20:18
Script: /search.php?action=user&userid=1&sid=bd560b2d3816fd1c87f3d53a598f3ff5
Referer: http://wehrbauten.de/search.php?action=user&userid=1&sid=bd560b2d3816fd1c87f3d53a598f3ff5