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 ('fc36c5c28580fe8521b6b5e4cd08045e','0','18.119.105.239','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715199364','board.php?boardid=88&sid=d7693d16225868eb2b8e86edc9d967d9','0','0','')
mysql error: Duplicate entry 'fc36c5c28580fe8521b6b5e4cd08045e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 22:16
Script: /board.php?boardid=88&sid=d7693d16225868eb2b8e86edc9d967d9
Referer: http://wehrbauten.de/board.php?boardid=88&sid=d7693d16225868eb2b8e86edc9d967d9