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 ('a3b7cd5945998e72840b1d30ba639f36','0','3.16.67.54','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715743363','report.php?postid=81011&sid=5ab5cce30bae0a8a0c78fc66695f4836','0','0','')
mysql error: Duplicate entry 'a3b7cd5945998e72840b1d30ba639f36' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 15.05.2024 @ 05:22
Script: /report.php?postid=81011&sid=5ab5cce30bae0a8a0c78fc66695f4836
Referer: