SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('d3393dc79a54323c3fb6ff9c503893d3','0','18.117.196.184','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714260470','misc.php?action=imprint&sid=a43ce08f9cee431a7a1638fbe08f84db','0','0','')
mysql error: Duplicate entry 'd3393dc79a54323c3fb6ff9c503893d3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.1.48-MariaDB-0+deb9u2
php version: 5.2.6
Date: 28.04.2024 @ 01:27
Script: /misc.php?action=imprint&sid=a43ce08f9cee431a7a1638fbe08f84db
Referer: