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 ('596b97128b2d2fb2badf423c0ab5fabb','0','18.220.253.4','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716449175','profile.php?userid=34160&sid=64eff6762831aa9fa8a8f080febe7602','0','0','')
mysql error: Duplicate entry '596b97128b2d2fb2badf423c0ab5fabb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.5.23-MariaDB-0+deb11u1
php version: 5.6.40
Date: 23.05.2024 @ 09:26
Script: /profile.php?userid=34160&sid=64eff6762831aa9fa8a8f080febe7602
Referer: