SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl 2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('fad087fa5feeef653f29959140f4ddfb','0','18.221.165.246','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)','1713973986','board.php?boardid=73&sid=69f25528ef5b8e7eb9ce7e150f1e4755','0','0','')
mysql error: Duplicate entry 'fad087fa5feeef653f29959140f4ddfb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44
php version: 5.2.17
Date: 24.04.2024 @ 17:53
Script: /board.php?boardid=73&sid=69f25528ef5b8e7eb9ce7e150f1e4755
Referer: http://your-wbb.de/board.php?boardid=73&sid=69f25528ef5b8e7eb9ce7e150f1e4755