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 ('1983a88d56f0a432b6632ed1bdeae7e8','0','3.12.151.153','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715741403','thread.php?goto=lastpost&threadid=10&sid=bc329c87ba5a5fba352b9b8d5f9d5049','0','0','')
mysql error: Duplicate entry '1983a88d56f0a432b6632ed1bdeae7e8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 15.05.2024 @ 04:50
Script: /thread.php?goto=lastpost&threadid=10&sid=bc329c87ba5a5fba352b9b8d5f9d5049
Referer: