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 ('bbc42369cd4056d8d15942ff3dae6ca1','0','18.117.145.173','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715949557','board.php?boardid=356&sid=611cbee06e344b73579f3430fd0769de','0','0','')
mysql error: Duplicate entry 'bbc42369cd4056d8d15942ff3dae6ca1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 17.05.2024 @ 14:39
Script: /board.php?boardid=356&sid=611cbee06e344b73579f3430fd0769de
Referer: http://wehrbauten.de/board.php?boardid=356&sid=611cbee06e344b73579f3430fd0769de