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 ('ae5f3cc3d8c1105e87bc82948eeae6b8','0','13.59.177.14','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715539458','board.php?boardid=20&page=1&daysprune=1000&sortfield=views&sortorder=ASC&sid=e533ca69abee4e4ed3a30fe1ba762c0f','0','0','')
mysql error: Duplicate entry 'ae5f3cc3d8c1105e87bc82948eeae6b8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 12.05.2024 @ 20:44
Script: /board.php?boardid=20&page=1&daysprune=1000&sortfield=views&sortorder=ASC&sid=e533ca69abee4e4ed3a30fe1ba762c0f
Referer: