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 ('81124d34cc59883be5d2611a7eb51f0a','0','18.222.107.236','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715831105','board.php?boardid=38&daysprune=1000&sortfield=starttime&sortorder=DESC&page=1&sid=cab1af286718074753f3919efbcf7ca2','0','0','')
mysql error: Duplicate entry '81124d34cc59883be5d2611a7eb51f0a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 16.05.2024 @ 05:45
Script: /board.php?boardid=38&daysprune=1000&sortfield=starttime&sortorder=DESC&page=1&sid=cab1af286718074753f3919efbcf7ca2
Referer: