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 ('4006dcdea7ffce201a4f1805b48bb19c','0','3.142.134.99','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716944323','search.php?sid=6fa0b4aacea9906a5a4d3bdd8128e97c','0','0','')
mysql error: Duplicate entry '4006dcdea7ffce201a4f1805b48bb19c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 4.4.9
Date: 29.05.2024 @ 02:58
Script: /board/search.php?sid=6fa0b4aacea9906a5a4d3bdd8128e97c
Referer: