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 ('aaf5ad3fcd7b57dddee1eb9bd9e75fcf','0','3.142.124.135','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1744878006','board.php?boardid=24','0','0','')
mysql error: Duplicate entry 'aaf5ad3fcd7b57dddee1eb9bd9e75fcf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 17.04.2025 @ 10:20
Script: /board.php?boardid=24
Referer: http://www.gttempel.de/markread.php?boardid=24