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 ('cddbc04b2705851a587772cfd3870174','0','18.116.19.17','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715955901','usercp.php?action=addsubscription&boardid=68&sid=763e8b900d5bc9c5553fb2236d078206','0','0','')
mysql error: Duplicate entry 'cddbc04b2705851a587772cfd3870174' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.1.48-MariaDB-0ubuntu0.18.04.1
php version: 7.4.33
Date: 17.05.2024 @ 16:25
Script: /usercp.php?action=addsubscription&boardid=68&sid=763e8b900d5bc9c5553fb2236d078206
Referer: http://www.gegen-bilderklau.net/usercp.php?action=addsubscription&boardid=68&sid=763e8b900d5bc9c5553fb2236d078206