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 ('9cff0203f6c9b2e24b6f5a436c8ba3a9','0','18.189.193.172','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714797995','jgs_portal.php?sid=a4efffe8686378fe22983cc0b11d3684','0','0','')
mysql error: Duplicate entry '9cff0203f6c9b2e24b6f5a436c8ba3a9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 06:46
Script: /jgs_portal.php?sid=a4efffe8686378fe22983cc0b11d3684
Referer: