SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl 2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('4836bcb83844006cf732f7fe88f4ad71','0','18.188.152.162','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)','1714751564','memberslist.php?sid=5e0af36b0eb50ce75d2f9c7fa48fa45e','0','0','')
mysql error: Duplicate entry '4836bcb83844006cf732f7fe88f4ad71' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44
php version: 5.2.17
Date: 03.05.2024 @ 17:52
Script: /memberslist.php?sid=5e0af36b0eb50ce75d2f9c7fa48fa45e
Referer: