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 ('206887c752cec0c3079644bcc9e21c75','0','18.216.124.145','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715604700','board.php?boardid=230&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=4c34765cc38e9d6e01cc7a102f19a76a','0','0','')
mysql error: Duplicate entry '206887c752cec0c3079644bcc9e21c75' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 14:51
Script: /board.php?boardid=230&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=4c34765cc38e9d6e01cc7a102f19a76a
Referer: http://wehrbauten.de/board.php?boardid=230&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=4c34765cc38e9d6e01cc7a102f19a76a