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 ('4d4508dba42f9a367893af2cb5997c0a','0','18.118.145.114','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714823665','board.php?boardid=79&sid=73ead1f8642d6fe8d0502b4d4934e397','0','0','')
mysql error: Duplicate entry '4d4508dba42f9a367893af2cb5997c0a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 13:54
Script: /board.php?boardid=79&sid=73ead1f8642d6fe8d0502b4d4934e397
Referer: http://wehrbauten.de/board.php?boardid=79&sid=73ead1f8642d6fe8d0502b4d4934e397