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 ('8cc2ce99594eb1f09930941a0c3de779','0','3.15.2.78','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715424394','board.php?boardid=265&sid=02d40a933f8b108150513163a5a0fdc4','0','0','')
mysql error: Duplicate entry '8cc2ce99594eb1f09930941a0c3de779' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 12:46
Script: /board.php?boardid=265&sid=02d40a933f8b108150513163a5a0fdc4
Referer: