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 ('cb2a115d4079eee666fd6ef1ed0c99d7','0','18.219.236.199','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714032483','thread.php?threadid=4445&goto=lastpost&sid=0a2d2ff28011a9bfe1424716aec017e2','0','0','')
mysql error: Duplicate entry 'cb2a115d4079eee666fd6ef1ed0c99d7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 25.04.2024 @ 10:08
Script: /thread.php?threadid=4445&goto=lastpost&sid=0a2d2ff28011a9bfe1424716aec017e2
Referer: