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 ('9260e0667a7ba76406e7aa14816e7480','0','3.142.114.245','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715468653','markread.php?boardid=344&sid=ead2dac38fe3b94f30c37c9f1d94ae80','0','0','')
mysql error: Duplicate entry '9260e0667a7ba76406e7aa14816e7480' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 01:04
Script: /markread.php?boardid=344&sid=ead2dac38fe3b94f30c37c9f1d94ae80
Referer: http://wehrbauten.de/markread.php?boardid=344&sid=ead2dac38fe3b94f30c37c9f1d94ae80