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 ('85d99f2a0c8b6adfb2c2f9a087980777','0','18.117.81.240','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715105694','memberslist.php?sid=a0af714f73b9e1a3c060a56979196d3f','0','0','')
mysql error: Duplicate entry '85d99f2a0c8b6adfb2c2f9a087980777' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 20:14
Script: /memberslist.php?sid=a0af714f73b9e1a3c060a56979196d3f
Referer: http://wehrbauten.de/memberslist.php?sid=a0af714f73b9e1a3c060a56979196d3f