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 ('78d31cac0a112c1d1003382110518905','0','3.141.106.171','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715860714','board.php?boardid=582&sid=995bdaa513619ccce62380276fce1ae5','0','0','')
mysql error: Duplicate entry '78d31cac0a112c1d1003382110518905' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 13:58
Script: /board.php?boardid=582&sid=995bdaa513619ccce62380276fce1ae5
Referer: