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 ('23c47a3be51a297b684c62b45162c1a8','0','3.145.172.213','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715717736','board.php?boardid=354&sid=bfa03145b2b767e3ca7ce0d528f1beb5','0','0','')
mysql error: Duplicate entry '23c47a3be51a297b684c62b45162c1a8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 22:15
Script: /board.php?boardid=354&sid=bfa03145b2b767e3ca7ce0d528f1beb5
Referer: