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 ('7bdffd36cd1e8e8977154b5d06ab8b87','0','18.117.183.172','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714887895','board.php?boardid=134&sid=6fdf38508702a4ec1c63b8997171622a','0','0','')
mysql error: Duplicate entry '7bdffd36cd1e8e8977154b5d06ab8b87' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 07:44
Script: /board.php?boardid=134&sid=6fdf38508702a4ec1c63b8997171622a
Referer: