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 ('1894d04dab6ea3b3899bbf83f0b2e74f','0','3.141.199.243','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714788657','board.php?boardid=539&sid=ba91c0400078930da3584f85dff8b814','0','0','')
mysql error: Duplicate entry '1894d04dab6ea3b3899bbf83f0b2e74f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 04:10
Script: /board.php?boardid=539&sid=ba91c0400078930da3584f85dff8b814
Referer: http://wehrbauten.de/board.php?boardid=539&sid=ba91c0400078930da3584f85dff8b814