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 ('53123990a3b754fc92a8cb48f8f23ff3','0','3.14.6.194','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714055568','board.php?boardid=136&sid=4a4ca346531376ae31352c39a359c182','0','0','')
mysql error: Duplicate entry '53123990a3b754fc92a8cb48f8f23ff3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 25.04.2024 @ 16:32
Script: /board.php?boardid=136&sid=4a4ca346531376ae31352c39a359c182
Referer: http://wehrbauten.de/board.php?boardid=136&sid=4a4ca346531376ae31352c39a359c182