SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('830c1b934afaa2fe3fcf242b273fbe93','0','18.223.241.144','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745055895','formmail.php?threadid=2507','0','0','')
mysql error: Duplicate entry '830c1b934afaa2fe3fcf242b273fbe93' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 19.04.2025 @ 11:44
Script: /formmail.php?threadid=2507
Referer: http://gttempel.de/formmail.php?threadid=2507