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 ('755d067accbf2f3d86ce8930941af1ce','0','18.216.34.146','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714738220','board.php?boardid=201&sid=dc8cb754c9c2d6100939bb9d1ddaca29','0','0','')
mysql error: Duplicate entry '755d067accbf2f3d86ce8930941af1ce' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 14:10
Script: /board.php?boardid=201&sid=dc8cb754c9c2d6100939bb9d1ddaca29
Referer: http://wehrbauten.de/board.php?boardid=201&sid=dc8cb754c9c2d6100939bb9d1ddaca29