SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('cdc2ca087bd808f547021a0500c555a8','0','52.15.165.239','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745314730','thread.php?postid=12027','0','0','')
mysql error: Duplicate entry 'cdc2ca087bd808f547021a0500c555a8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.04.2025 @ 11:38
Script: /thread.php?postid=12027
Referer: http://gttempel.de/thread.php?postid=12027