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 ('efaa52dc03bbf2248eb28707be6639b1','0','18.189.32.162','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715841063','formmail.php?userid=2059&sid=c189b72fdf7ba804752e11f2ba2903ff','0','0','')
mysql error: Duplicate entry 'efaa52dc03bbf2248eb28707be6639b1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 16.05.2024 @ 08:31
Script: /formmail.php?userid=2059&sid=c189b72fdf7ba804752e11f2ba2903ff
Referer: