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 ('e3bb28a921b540e8cb7b1246001db610','0','3.145.130.31','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1713868133','board.php?boardid=401&sid=d8b2489237504d18a464fc95e6d9520d','0','0','')
mysql error: Duplicate entry 'e3bb28a921b540e8cb7b1246001db610' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 23.04.2024 @ 12:28
Script: /board.php?boardid=401&sid=d8b2489237504d18a464fc95e6d9520d
Referer: http://wehrbauten.de/board.php?boardid=401&sid=d8b2489237504d18a464fc95e6d9520d