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 ('1d9069315bb7252ccb983c1236fcd527','0','18.119.109.119','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715773338','markread.php?boardid=454&sid=31b491428b2c107336a416b3e1cc4953','0','0','')
mysql error: Duplicate entry '1d9069315bb7252ccb983c1236fcd527' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 13:42
Script: /markread.php?boardid=454&sid=31b491428b2c107336a416b3e1cc4953
Referer: http://wehrbauten.de/markread.php?boardid=454&sid=31b491428b2c107336a416b3e1cc4953