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 ('9aaf4889a67494ac56407945e392d48b','0','3.144.4.221','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715426533','usercp.php?action=addsubscription&threadid=47&sid=1d41fa4bdac791e3689f11182b8ff0cf','0','0','')
mysql error: Duplicate entry '9aaf4889a67494ac56407945e392d48b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 13:22
Script: /usercp.php?action=addsubscription&threadid=47&sid=1d41fa4bdac791e3689f11182b8ff0cf
Referer: