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 ('c0872e2bc12b8e2091d1fb2ca0d8a8fe','0','3.142.96.146','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714793677','board.php?boardid=385&sid=f2bce178e2a4dc47cf21a4b0ad47a16a','0','0','')
mysql error: Duplicate entry 'c0872e2bc12b8e2091d1fb2ca0d8a8fe' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 05:34
Script: /board.php?boardid=385&sid=f2bce178e2a4dc47cf21a4b0ad47a16a
Referer: http://wehrbauten.de/board.php?boardid=385&sid=f2bce178e2a4dc47cf21a4b0ad47a16a