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 ('b13ef0ebc1b4bf757e9e8a85d80aa731','0','3.16.137.108','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715470727','board.php?boardid=130&sid=746d8f478528163d003b6aa3e2d13c47','0','0','')
mysql error: Duplicate entry 'b13ef0ebc1b4bf757e9e8a85d80aa731' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 01:38
Script: /board.php?boardid=130&sid=746d8f478528163d003b6aa3e2d13c47
Referer: