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 ('b5309ac79b56525ca41ad9ce38311656','0','3.144.243.184','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715066103','board.php?boardid=582&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=3af7ca672120571bd47a33f1212bb981','0','0','')
mysql error: Duplicate entry 'b5309ac79b56525ca41ad9ce38311656' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 09:15
Script: /board.php?boardid=582&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=3af7ca672120571bd47a33f1212bb981
Referer: