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 ('f86e4ca05f37b265b3a1f03d2f7d99b4','0','3.135.183.1','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714949108','board.php?boardid=48&sid=92eef5b7f607c297772e6348652936e3','0','0','')
mysql error: Duplicate entry 'f86e4ca05f37b265b3a1f03d2f7d99b4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 00:45
Script: /board.php?boardid=48&sid=92eef5b7f607c297772e6348652936e3
Referer: http://wehrbauten.de/board.php?boardid=48&sid=92eef5b7f607c297772e6348652936e3