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 ('6b5eb7dbc071bec781299dee48ec11c1','0','18.117.81.240','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714665732','board.php?boardid=379&sid=07d5781731642a649ed7a745d68234d6','0','0','')
mysql error: Duplicate entry '6b5eb7dbc071bec781299dee48ec11c1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 18:02
Script: /board.php?boardid=379&sid=07d5781731642a649ed7a745d68234d6
Referer: