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 ('3ff05dd3e7dc9ee837ac3d19233fd36a','0','3.142.173.227','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715393079','board.php?boardid=71&sid=92bb109c46e88f1afe0ae38c6bbb750b','0','0','')
mysql error: Duplicate entry '3ff05dd3e7dc9ee837ac3d19233fd36a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 04:04
Script: /board.php?boardid=71&sid=92bb109c46e88f1afe0ae38c6bbb750b
Referer: