SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6.pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('cc9345c61c12863e3d360f7540dc12ba','0','18.223.20.57','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714412993','pms.php?action=newpm&userid=43&sid=2bf111a3cc4d52a2c68d17bd857bf75f','0','0','')
mysql error: Duplicate entry 'cc9345c61c12863e3d360f7540dc12ba' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.41
php version: 5.3.29
Date: 29.04.2024 @ 19:49
Script: /wbb2/pms.php?action=newpm&userid=43&sid=2bf111a3cc4d52a2c68d17bd857bf75f
Referer: