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 ('971fab44b950a679c21ac5d4bea1d277','0','3.129.63.184','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715498271','board.php?boardid=536&sid=e59c1b1abe7445597706631ed7241e7d','0','0','')
mysql error: Duplicate entry '971fab44b950a679c21ac5d4bea1d277' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 09:17
Script: /board.php?boardid=536&sid=e59c1b1abe7445597706631ed7241e7d
Referer: