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 ('bdc97e9aac7848d7ba349c579e900d55','0','18.218.89.173','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716289733','thread.php?goto=nextnewest&threadid=5226&sid=a8e4e3c2311168083918c8656d80e351','0','0','')
mysql error: Duplicate entry 'bdc97e9aac7848d7ba349c579e900d55' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 21.05.2024 @ 13:08
Script: /thread.php?goto=nextnewest&threadid=5226&sid=a8e4e3c2311168083918c8656d80e351
Referer: