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 ('4de40f144a589ff9387d74911386e556','0','3.144.124.232','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714631368','jgs_portal.php?sid=648ad24074def14c899ccf21ee72823f','0','0','')
mysql error: Duplicate entry '4de40f144a589ff9387d74911386e556' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 08:29
Script: /jgs_portal.php?sid=648ad24074def14c899ccf21ee72823f
Referer: http://wehrbauten.de/jgs_portal.php?sid=648ad24074def14c899ccf21ee72823f