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 ('b9e9b6e6033e93cc42d745808b919706','0','3.17.139.66','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715758338','thread.php?threadid=984&sid=9f90ea4909e6a8d094c153f9b1e5f820','0','0','')
mysql error: Duplicate entry 'b9e9b6e6033e93cc42d745808b919706' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 09:32
Script: /thread.php?threadid=984&sid=9f90ea4909e6a8d094c153f9b1e5f820
Referer: