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 ('fdc3f9210a8a61c7e30605bff4491a25','0','13.58.60.192','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714930646','board.php?boardid=459&sid=ecf27b134d267f2d7727546779738c5c','0','0','')
mysql error: Duplicate entry 'fdc3f9210a8a61c7e30605bff4491a25' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 19:37
Script: /board.php?boardid=459&sid=ecf27b134d267f2d7727546779738c5c
Referer: http://wehrbauten.de/board.php?boardid=459&sid=ecf27b134d267f2d7727546779738c5c