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 ('303bc35185008687b204710b995f764d','0','3.145.64.132','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715035188','markread.php?boardid=681&sid=78d7e4718e283182d028491aedb87e69','0','0','')
mysql error: Duplicate entry '303bc35185008687b204710b995f764d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 00:39
Script: /markread.php?boardid=681&sid=78d7e4718e283182d028491aedb87e69
Referer: