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 ('2fcfe5ad3c6950b65216c3d32ef851e6','0','3.147.66.149','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715611131','board.php?boardid=142&sid=684aac38902c62d5fc710eca7fc7b906','0','0','')
mysql error: Duplicate entry '2fcfe5ad3c6950b65216c3d32ef851e6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 16:38
Script: /board.php?boardid=142&sid=684aac38902c62d5fc710eca7fc7b906
Referer: http://wehrbauten.de/board.php?boardid=142&sid=684aac38902c62d5fc710eca7fc7b906