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 ('70e437533d291a7109e8d165dfafee86','0','3.12.161.77','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715075298','board.php?boardid=588&sid=05386c1bf47bcefed4e9c07eae37fcc8','0','0','')
mysql error: Duplicate entry '70e437533d291a7109e8d165dfafee86' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 11:48
Script: /board.php?boardid=588&sid=05386c1bf47bcefed4e9c07eae37fcc8
Referer: http://wehrbauten.de/board.php?boardid=588&sid=05386c1bf47bcefed4e9c07eae37fcc8