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 ('15daa11c3fe0a45b676434dc4d133e45','0','18.189.193.172','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715288896','thread.php?goto=lastpost&threadid=2020&sid=9cc93be0bd59cd545645d6a1eb50d577','0','0','')
mysql error: Duplicate entry '15daa11c3fe0a45b676434dc4d133e45' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 23:08
Script: /thread.php?goto=lastpost&threadid=2020&sid=9cc93be0bd59cd545645d6a1eb50d577
Referer: