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 ('50896f8ab49a3233f4f2b916d38e90c6','0','18.225.95.98','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1736514337','ct_mail.php?Page=857087301','0','0','')
mysql error: Duplicate entry '50896f8ab49a3233f4f2b916d38e90c6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.33-0ubuntu0.16.04.1
php version: 5.6.40
Date: 10.01.2025 @ 14:05
Script: /ct_mail.php?Page=857087301
Referer: