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 ('cf3a0c2ef3c8c73cffeeb1a0e0d2b372','0','18.219.156.56','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715885104','thread.php?threadid=14&page=2&sid=65a5df4b050b06632b950d836b7424ca','0','0','')
mysql error: Duplicate entry 'cf3a0c2ef3c8c73cffeeb1a0e0d2b372' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 16.05.2024 @ 20:45
Script: /thread.php?threadid=14&page=2&sid=65a5df4b050b06632b950d836b7424ca
Referer: