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 ('86ab4414ef9c62e3ef920c7986e5e68d','0','18.222.184.0','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715409674','board.php?boardid=259&sid=44a7fc6f12d2f09d0cb0ab746da23d19','0','0','')
mysql error: Duplicate entry '86ab4414ef9c62e3ef920c7986e5e68d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 08:41
Script: /board.php?boardid=259&sid=44a7fc6f12d2f09d0cb0ab746da23d19
Referer: