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 ('31ca63b69699e55c338aee185c3c671c','0','18.224.59.231','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715298556','memberslist.php?sid=9bb71811ff3be40f763a48585c9a03e0','0','0','')
mysql error: Duplicate entry '31ca63b69699e55c338aee185c3c671c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 01:49
Script: /memberslist.php?sid=9bb71811ff3be40f763a48585c9a03e0
Referer: http://wehrbauten.de/memberslist.php?sid=9bb71811ff3be40f763a48585c9a03e0