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 ('c6e39b168072d4487944e8f5edd317a8','0','3.144.48.135','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714692186','memberslist.php?sid=d610004665d93c9278ae23e2bd6a58bd','0','0','')
mysql error: Duplicate entry 'c6e39b168072d4487944e8f5edd317a8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 01:23
Script: /memberslist.php?sid=d610004665d93c9278ae23e2bd6a58bd
Referer: http://wehrbauten.de/memberslist.php?sid=d610004665d93c9278ae23e2bd6a58bd