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 ('40f8049dd177b8e13753b874f1c326ff','0','18.191.150.109','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716599639','jgs_treffen.php?sid=d57dc70713826ace276d5b95955ac4c9','0','0','')
mysql error: Duplicate entry '40f8049dd177b8e13753b874f1c326ff' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.3.39-MariaDB-0+deb10u2
php version: 5.6.40-0+deb8u12
Date: 25.05.2024 @ 03:13
Script: /jgs_treffen.php?sid=d57dc70713826ace276d5b95955ac4c9
Referer: