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 ('08539c990a0a12d16f7bfedfeadfefa6','0','3.142.195.204','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715582195','memberslist.php?sid=6a6df9775bb2d8bde8c4656e209c5128','0','0','')
mysql error: Duplicate entry '08539c990a0a12d16f7bfedfeadfefa6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 08:36
Script: /memberslist.php?sid=6a6df9775bb2d8bde8c4656e209c5128
Referer: