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 ('491fe5e9ca5f402457c13f4d771eddc6','0','18.225.149.232','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716360915','memberslist.php?sid=fd5e50d706b4a0e8200da9ef9833e072','0','0','')
mysql error: Duplicate entry '491fe5e9ca5f402457c13f4d771eddc6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 22.05.2024 @ 08:55
Script: /memberslist.php?sid=fd5e50d706b4a0e8200da9ef9833e072
Referer: