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 ('fad3b52290fee0413ec8550472ad93c5','0','18.118.140.108','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714641855','usercp.php?action=addsubscription&boardid=261&sid=1b46f788460c92b3bea93f1563f54812','0','0','')
mysql error: Duplicate entry 'fad3b52290fee0413ec8550472ad93c5' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 11:24
Script: /usercp.php?action=addsubscription&boardid=261&sid=1b46f788460c92b3bea93f1563f54812
Referer: