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 ('55af268f5b8df09cdb239a1bfa4adad0','0','3.148.107.255','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715487270','board.php?boardid=154&sid=7cef021a9b3bb2ce5b8fdae903a4c564','0','0','')
mysql error: Duplicate entry '55af268f5b8df09cdb239a1bfa4adad0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 06:14
Script: /board.php?boardid=154&sid=7cef021a9b3bb2ce5b8fdae903a4c564
Referer: http://wehrbauten.de/board.php?boardid=154&sid=7cef021a9b3bb2ce5b8fdae903a4c564