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 ('da74ac4b839eab5bbec77d6f3f4bf6e3','0','3.135.198.49','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714929942','usercp.php?action=addsubscription&boardid=265&sid=aec6d6ea7c59e45648fde9020f3a09c2','0','0','')
mysql error: Duplicate entry 'da74ac4b839eab5bbec77d6f3f4bf6e3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 19:25
Script: /usercp.php?action=addsubscription&boardid=265&sid=aec6d6ea7c59e45648fde9020f3a09c2
Referer: http://wehrbauten.de/usercp.php?action=addsubscription&boardid=265&sid=aec6d6ea7c59e45648fde9020f3a09c2