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 ('0b18844b4f58f0616b8bbde0bcd8167a','0','18.119.213.235','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715385462','usercp.php?action=addsubscription&boardid=277&sid=96b58af7b3e8d3f48bb08e21c52a97d9','0','0','')
mysql error: Duplicate entry '0b18844b4f58f0616b8bbde0bcd8167a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 01:57
Script: /usercp.php?action=addsubscription&boardid=277&sid=96b58af7b3e8d3f48bb08e21c52a97d9
Referer: http://wehrbauten.de/usercp.php?action=addsubscription&boardid=277&sid=96b58af7b3e8d3f48bb08e21c52a97d9