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 ('ef209013233d43fa017a555ebe59f403','0','18.117.158.47','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714845791','jgs_galerie.php?sid=bcdef7e8bf970b290081946b0bb9d86f','0','0','')
mysql error: Duplicate entry 'ef209013233d43fa017a555ebe59f403' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 20:03
Script: /jgs_galerie.php?sid=bcdef7e8bf970b290081946b0bb9d86f
Referer: http://wehrbauten.de/jgs_galerie.php?sid=bcdef7e8bf970b290081946b0bb9d86f