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 ('0f7e8e7bfbfb3ba88b1c57d583e692af','0','18.217.68.197','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715466660','board.php?boardid=415&sid=ee312e4d00f54dc4b5467f4b4d881ef2','0','0','')
mysql error: Duplicate entry '0f7e8e7bfbfb3ba88b1c57d583e692af' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 00:31
Script: /board.php?boardid=415&sid=ee312e4d00f54dc4b5467f4b4d881ef2
Referer: http://wehrbauten.de/board.php?boardid=415&sid=ee312e4d00f54dc4b5467f4b4d881ef2