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 ('42875d1d1356877160938f920000521f','0','18.188.241.82','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714673834','board.php?boardid=41&sid=4af35860dc3a89b25d4b753d607ac72b','0','0','')
mysql error: Duplicate entry '42875d1d1356877160938f920000521f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 20:17
Script: /board.php?boardid=41&sid=4af35860dc3a89b25d4b753d607ac72b
Referer: http://wehrbauten.de/board.php?boardid=41&sid=4af35860dc3a89b25d4b753d607ac72b