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 ('904f3d365928745da3e5fe9eb7205488','0','3.12.161.77','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715063392','index.php','0','0','')
mysql error: Duplicate entry '904f3d365928745da3e5fe9eb7205488' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.5.62-0+deb8u1
php version: 5.6.40-0+deb8u12
Date: 07.05.2024 @ 08:29
Script: /archive/index.php
Referer: https://www.matheboard.de/archive/417400/archive/580823/thread.html