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 ('a746d7e5ed9d8db89cef61f2dae356e7','0','3.144.113.197','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714706282','memberslist.php?sid=cac9b0944fb7c97170b63555173a132c','0','0','')
mysql error: Duplicate entry 'a746d7e5ed9d8db89cef61f2dae356e7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 05:18
Script: /memberslist.php?sid=cac9b0944fb7c97170b63555173a132c
Referer: http://wehrbauten.de/memberslist.php?sid=cac9b0944fb7c97170b63555173a132c