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 ('b6dfeadba3e6b0062af1ebb96070374f','0','3.144.252.140','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715254201','thread.php?threadid=17&sid=9efe3e0810f27028c446ea6107490c9b','0','0','')
mysql error: Duplicate entry 'b6dfeadba3e6b0062af1ebb96070374f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 4.4.9
Date: 09.05.2024 @ 13:30
Script: /Forum/thread.php?threadid=17&sid=9efe3e0810f27028c446ea6107490c9b
Referer: