SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl 2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('dc9b5ccc9fa9d1cc060ec6321827129f','0','3.133.12.172','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)','1713575022','markread.php?boardid=56&sid=f8a34a5367c17278a858d7d6fe16a7d4','0','0','')
mysql error: Duplicate entry 'dc9b5ccc9fa9d1cc060ec6321827129f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44
php version: 5.2.17
Date: 20.04.2024 @ 03:03
Script: /markread.php?boardid=56&sid=f8a34a5367c17278a858d7d6fe16a7d4
Referer: http://your-wbb.de/markread.php?boardid=56&sid=f8a34a5367c17278a858d7d6fe16a7d4