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 ('265c9ed4b16c3ed7534b74af2effb58e','0','18.191.171.10','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1734948700','thread.php?hilightuser=0&threadid=1972&threadview=0','0','0','')
mysql error: Duplicate entry '265c9ed4b16c3ed7534b74af2effb58e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 23.12.2024 @ 11:11
Script: /thread.php?hilightuser=0&threadid=1972&threadview=0
Referer: http://gttempel.de/thread.php?hilightuser=0&threadid=1972&threadview=0