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 ('9a040be5bb3e3b1e652dd00d870439f9','0','3.144.143.31','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714226970','memberslist.php?sid=27f7e0ce89a20f8eebfb07edbcdaa077','0','0','')
mysql error: Duplicate entry '9a040be5bb3e3b1e652dd00d870439f9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44-log
php version: 5.6.40
Date: 27.04.2024 @ 16:09
Script: /wbb231/memberslist.php?sid=27f7e0ce89a20f8eebfb07edbcdaa077
Referer: