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 ('a0f1ac1dadf843dada35263c176745ff','0','18.216.253.84','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1734857622','thread.php?hilightuser=0&threadid=1018&threadview=1','0','0','')
mysql error: Duplicate entry 'a0f1ac1dadf843dada35263c176745ff' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.12.2024 @ 09:53
Script: /thread.php?hilightuser=0&threadid=1018&threadview=1
Referer: http://gttempel.de/thread.php?hilightuser=0&threadid=1018&threadview=1