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 ('9d478a3ad5cfa2d2fcb5bbe430ca2eb2','0','3.17.6.75','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715316670','usercp.php?action=addsubscription&boardid=536&sid=0c12aa9de33b882dfab868675e8cfb56','0','0','')
mysql error: Duplicate entry '9d478a3ad5cfa2d2fcb5bbe430ca2eb2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 06:51
Script: /usercp.php?action=addsubscription&boardid=536&sid=0c12aa9de33b882dfab868675e8cfb56
Referer: