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 ('cf586bbe42ac517407b7e5a546453c21','0','3.145.15.1','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715190943','misc.php?action=imprint&sid=8125a809d58ed8751e05b5e6a6022d01','0','0','')
mysql error: Duplicate entry 'cf586bbe42ac517407b7e5a546453c21' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 19:55
Script: /misc.php?action=imprint&sid=8125a809d58ed8751e05b5e6a6022d01
Referer: http://wehrbauten.de/misc.php?action=imprint&sid=8125a809d58ed8751e05b5e6a6022d01