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 ('b57d906e3ac7eb71aecc573d29efe79e','0','18.119.248.159','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715444755','thread.php?threadid=19887&goto=lastpost&sid=f8af70eee1c6c271da8005f0ca53f776','0','0','')
mysql error: Duplicate entry 'b57d906e3ac7eb71aecc573d29efe79e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.15-MariaDB-cll-lve-log
php version: 5.6.40
Date: 11.05.2024 @ 16:25
Script: /thread.php?threadid=19887&goto=lastpost&sid=f8af70eee1c6c271da8005f0ca53f776
Referer: