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 ('a3b8c7d821b33f50b829bcb43a85695f','0','18.226.214.84','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715822822','report.php?postid=74993&sid=59d8d778f6de17875dc94b9c046ab4c2','0','0','')
mysql error: Duplicate entry 'a3b8c7d821b33f50b829bcb43a85695f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 16.05.2024 @ 03:27
Script: /report.php?postid=74993&sid=59d8d778f6de17875dc94b9c046ab4c2
Referer: