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 ('cee30ff431e7f055016ff1f0bab3e6fb','0','3.145.63.136','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715315264','usercp.php?action=addsubscription&boardid=465&sid=dac06a1f2b2759e6b2f53e9775ac7d46','0','0','')
mysql error: Duplicate entry 'cee30ff431e7f055016ff1f0bab3e6fb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 06:27
Script: /usercp.php?action=addsubscription&boardid=465&sid=dac06a1f2b2759e6b2f53e9775ac7d46
Referer: http://wehrbauten.de/usercp.php?action=addsubscription&boardid=465&sid=dac06a1f2b2759e6b2f53e9775ac7d46