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 ('7cfd5bfcd180477b7868288197335547','0','3.149.254.35','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715251821','usercp.php?action=addsubscription&boardid=272&sid=b4c1cd1978787e15af2714869ab4dd6b','0','0','')
mysql error: Duplicate entry '7cfd5bfcd180477b7868288197335547' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 12:50
Script: /usercp.php?action=addsubscription&boardid=272&sid=b4c1cd1978787e15af2714869ab4dd6b
Referer: http://wehrbauten.de/usercp.php?action=addsubscription&boardid=272&sid=b4c1cd1978787e15af2714869ab4dd6b