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 ('23e341aeea262314feb00119c2a66fc1','0','3.16.51.3','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714875262','board.php?boardid=49&sid=930c245bca264a7ce35ad92a06f38542','0','0','')
mysql error: Duplicate entry '23e341aeea262314feb00119c2a66fc1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 04:14
Script: /board.php?boardid=49&sid=930c245bca264a7ce35ad92a06f38542
Referer: http://wehrbauten.de/board.php?boardid=49&sid=930c245bca264a7ce35ad92a06f38542