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 ('3ea3f8cf21ff1ddea3bc6a65e85feb9d','0','18.191.84.32','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714865014','board.php?boardid=260&sid=6e71cddf27d15f55d91ca906072fc81b','0','0','')
mysql error: Duplicate entry '3ea3f8cf21ff1ddea3bc6a65e85feb9d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 01:23
Script: /board.php?boardid=260&sid=6e71cddf27d15f55d91ca906072fc81b
Referer: http://wehrbauten.de/board.php?boardid=260&sid=6e71cddf27d15f55d91ca906072fc81b