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 ('28e6b650187a87c6314da3095625c04f','0','3.17.174.239','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715061399','thread.php?goto=lastpost&threadid=2392&sid=85c46ee1b2e05b8fe3ac539cd6723c8d','0','0','')
mysql error: Duplicate entry '28e6b650187a87c6314da3095625c04f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 07:56
Script: /thread.php?goto=lastpost&threadid=2392&sid=85c46ee1b2e05b8fe3ac539cd6723c8d
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2392&sid=85c46ee1b2e05b8fe3ac539cd6723c8d