SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('18a479a7738e12772d977eb9b5111103','0','216.73.216.19','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1756683149','usercp.php?action=addsubscription&threadid=1174','0','0','')
mysql error: Duplicate entry '18a479a7738e12772d977eb9b5111103' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 01.09.2025 @ 01:32
Script: /usercp.php?action=addsubscription&threadid=1174
Referer: