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 ('4db6b76fb106fd7bde5159dcb0de2da4','0','18.223.170.21','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715957053','addreply.php?threadid=1052&sid=07a881a6f8e0a5b869151fbc32819f64','0','0','')
mysql error: Duplicate entry '4db6b76fb106fd7bde5159dcb0de2da4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 17.05.2024 @ 16:44
Script: /addreply.php?threadid=1052&sid=07a881a6f8e0a5b869151fbc32819f64
Referer: