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 ('c86b09d656a5eb10c2a01ce907d2c688','0','18.191.180.252','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715644349','usercp.php?action=buddy&add=344&sid=75ee9004867329d2d6c93442d0c707a3','0','0','')
mysql error: Duplicate entry 'c86b09d656a5eb10c2a01ce907d2c688' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 01:52
Script: /usercp.php?action=buddy&add=344&sid=75ee9004867329d2d6c93442d0c707a3
Referer: