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 ('53872a344797538b50eee2f80b69b142','0','3.136.97.64','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715210100','board.php?boardid=545&sid=190cc9219a126dfd0267f262c457adc0','0','0','')
mysql error: Duplicate entry '53872a344797538b50eee2f80b69b142' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 01:15
Script: /board.php?boardid=545&sid=190cc9219a126dfd0267f262c457adc0
Referer: http://wehrbauten.de/board.php?boardid=545&sid=190cc9219a126dfd0267f262c457adc0