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 ('7cf29fd39aa41c99fa88a1fd06b71cfc','0','3.145.15.1','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714677586','search.php?sid=5e00621d45fb4126dc46b550a3a03ec0','0','0','')
mysql error: Duplicate entry '7cf29fd39aa41c99fa88a1fd06b71cfc' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 21:19
Script: /search.php?sid=5e00621d45fb4126dc46b550a3a03ec0
Referer: http://wehrbauten.de/search.php?sid=5e00621d45fb4126dc46b550a3a03ec0