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 ('a9690d06b22e0ceb8a3ef30b6299c719','0','18.217.135.23','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715951042','addreply.php?action=quote&postid=56185&sid=53d71934bd34ee28fee694eedda5f695','0','0','')
mysql error: Duplicate entry 'a9690d06b22e0ceb8a3ef30b6299c719' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 17.05.2024 @ 15:04
Script: /addreply.php?action=quote&postid=56185&sid=53d71934bd34ee28fee694eedda5f695
Referer: