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 ('4813cd1a967a08c2a834fe515d564d53','0','3.145.93.210','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715046444','board.php?boardid=53&sid=09885fc7df3d6f7e8f2d0f0629bae27d','0','0','')
mysql error: Duplicate entry '4813cd1a967a08c2a834fe515d564d53' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 03:47
Script: /board.php?boardid=53&sid=09885fc7df3d6f7e8f2d0f0629bae27d
Referer: http://wehrbauten.de/board.php?boardid=53&sid=09885fc7df3d6f7e8f2d0f0629bae27d