SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.5): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('9a1f899bf962bd15a4fbe3c973839013','0','216.73.217.10','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1751327465','login.php?sid=9930b4cc99b7da256d0175298ed5c9c9','0','0','')
mysql error: Duplicate entry '9a1f899bf962bd15a4fbe3c973839013' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42
php version: 5.2.17
Date: 01.07.2025 @ 01:51
Script: /wbb2/login.php?sid=9930b4cc99b7da256d0175298ed5c9c9
Referer: