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 ('7bbc21adca6e4c2b32c6d41ab9e1a85a','0','3.137.188.11','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715357739','board.php?boardid=780&sid=69bf6c0976ba86de3dcf6e9ede8cce12','0','0','')
mysql error: Duplicate entry '7bbc21adca6e4c2b32c6d41ab9e1a85a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 18:15
Script: /board.php?boardid=780&sid=69bf6c0976ba86de3dcf6e9ede8cce12
Referer: http://wehrbauten.de/board.php?boardid=780&sid=69bf6c0976ba86de3dcf6e9ede8cce12