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 ('87f72d7d2489cf88bb3ed487d903c7bf','0','18.222.184.0','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715850504','board.php?boardid=126&sid=04130b2a1d59b8771d45d3e08dba2f8c','0','0','')
mysql error: Duplicate entry '87f72d7d2489cf88bb3ed487d903c7bf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 11:08
Script: /board.php?boardid=126&sid=04130b2a1d59b8771d45d3e08dba2f8c
Referer: