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 ('1051e09d1eb4213931ac9ac11cb1876e','0','18.216.1.97','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716398725','board.php?boardid=181&sid=9cc07f2e2b92cf83b51d8bb51b381b86','0','0','')
mysql error: Duplicate entry '1051e09d1eb4213931ac9ac11cb1876e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.16-MariaDB-0ubuntu0.22.04.1
php version: 5.6.40
Date: 22.05.2024 @ 19:25
Script: /board.php?boardid=181&sid=9cc07f2e2b92cf83b51d8bb51b381b86
Referer: