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 ('08136a1bf98ede9aec3bbcd0efceb950','0','18.118.30.253','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714539364','register.php?sid=ac45281c600d825e71a05e206ba63e69','0','0','')
mysql error: Duplicate entry '08136a1bf98ede9aec3bbcd0efceb950' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 01.05.2024 @ 06:56
Script: /register.php?sid=ac45281c600d825e71a05e206ba63e69
Referer: