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 ('1d9c94f489f57e8341e27e45346a00bb','0','3.145.9.12','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715771034','misc.php?action=imprint&sid=a82bd85e03dbae7482f9331d3999b391','0','0','')
mysql error: Duplicate entry '1d9c94f489f57e8341e27e45346a00bb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 15.05.2024 @ 13:03
Script: /misc.php?action=imprint&sid=a82bd85e03dbae7482f9331d3999b391
Referer: