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 ('8836b94370865e5684777d98ee9e50da','0','3.129.211.6','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715702278','thread.php?threadid=1193&sid=ccb9550b93b57c7803d9377e86061421','0','0','')
mysql error: Duplicate entry '8836b94370865e5684777d98ee9e50da' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 17:57
Script: /thread.php?threadid=1193&sid=ccb9550b93b57c7803d9377e86061421
Referer: