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 ('d4c1b49ce3a3345e39af31d40d55782e','0','3.149.251.142','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715499527','board.php?boardid=752&sid=7a0bff66ce3dbff8b809af62531e3885','0','0','')
mysql error: Duplicate entry 'd4c1b49ce3a3345e39af31d40d55782e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 09:38
Script: /board.php?boardid=752&sid=7a0bff66ce3dbff8b809af62531e3885
Referer: