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 ('911cc74e3ae0d61c4dc22d1d571f820e','0','3.16.212.99','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714246002','board.php?boardid=38&sid=c776f2de09820279ffefda1365d0efa6','0','0','')
mysql error: Duplicate entry '911cc74e3ae0d61c4dc22d1d571f820e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 27.04.2024 @ 21:26
Script: /board.php?boardid=38&sid=c776f2de09820279ffefda1365d0efa6
Referer: http://wehrbauten.de/board.php?boardid=38&sid=c776f2de09820279ffefda1365d0efa6