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 ('3a4abaf45ae0eaa44181e77d40e14f18','0','3.144.254.133','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715617893','usercp.php?action=addsubscription&boardid=642&sid=a72b57711666475922e3f916e130bed5','0','0','')
mysql error: Duplicate entry '3a4abaf45ae0eaa44181e77d40e14f18' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 18:31
Script: /usercp.php?action=addsubscription&boardid=642&sid=a72b57711666475922e3f916e130bed5
Referer: http://wehrbauten.de/usercp.php?action=addsubscription&boardid=642&sid=a72b57711666475922e3f916e130bed5