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 ('87a40dd730a88da5f4a15ffab78a0cdb','0','3.19.31.73','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714429513','board.php?boardid=780&sid=94486e10207ce971b34074430f7b7e82','0','0','')
mysql error: Duplicate entry '87a40dd730a88da5f4a15ffab78a0cdb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 30.04.2024 @ 00:25
Script: /board.php?boardid=780&sid=94486e10207ce971b34074430f7b7e82
Referer: