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 ('dfcc194282fad5a374968b7dcc6a6330','0','3.18.214.38','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715774937','usercp.php?action=addsubscription&boardid=340&sid=44c477f6e0ca927d5eb776a4c063b126','0','0','')
mysql error: Duplicate entry 'dfcc194282fad5a374968b7dcc6a6330' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 14:08
Script: /usercp.php?action=addsubscription&boardid=340&sid=44c477f6e0ca927d5eb776a4c063b126
Referer: http://wehrbauten.de/usercp.php?action=addsubscription&boardid=340&sid=44c477f6e0ca927d5eb776a4c063b126