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 ('dd5fa8e600fef16393329260d9ca1c48','0','3.133.138.134','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715649317','board.php?boardid=214&sid=047a2c7218731913bab93cda7dc57222','0','0','')
mysql error: Duplicate entry 'dd5fa8e600fef16393329260d9ca1c48' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 03:15
Script: /board.php?boardid=214&sid=047a2c7218731913bab93cda7dc57222
Referer: http://wehrbauten.de/board.php?boardid=214&sid=047a2c7218731913bab93cda7dc57222