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 ('6e9eb3a85186d7610919dcf8abcbb4bf','0','18.216.123.120','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715246329','misc.php?action=imprint&sid=84808990e0cba7cb8d8f21c621bdd3c1','0','0','')
mysql error: Duplicate entry '6e9eb3a85186d7610919dcf8abcbb4bf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 11:18
Script: /misc.php?action=imprint&sid=84808990e0cba7cb8d8f21c621bdd3c1
Referer: