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 ('a5416fbf004d80a483a596bb72041ba8','0','13.58.39.23','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714681028','board.php?boardid=113&sid=4bb977a6db0b6a59b200426edbd72f8c','0','0','')
mysql error: Duplicate entry 'a5416fbf004d80a483a596bb72041ba8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 22:17
Script: /board.php?boardid=113&sid=4bb977a6db0b6a59b200426edbd72f8c
Referer: http://wehrbauten.de/board.php?boardid=113&sid=4bb977a6db0b6a59b200426edbd72f8c