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 ('8c4b537bf19086be4b41dfe421a91248','0','3.17.160.242','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716302621','board.php?boardid=1&sid=7e4fd1b7f24ac920a6b207d6fe25fc94','0','0','')
mysql error: Duplicate entry '8c4b537bf19086be4b41dfe421a91248' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.41
php version: 5.6.40
Date: 21.05.2024 @ 16:43
Script: /board.php?boardid=1&sid=7e4fd1b7f24ac920a6b207d6fe25fc94
Referer: