MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1062 - Duplicate entry '1756303148-216.73.216.20-0' for key 'datetime'
Query:
UPDATE mybb_lastvisitors SET `ip`='216.73.216.20', `port`='63672', `proxy`='1', `uid`='0', `username`='', `datetime`='1756303148', `referrer`='http://www.mybbcodes.com/showthread.php?action=nextoldest&tid=14772', `url`='/showthread.php?tid=14771&pid=30255', `info`='Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)' WHERE ip='185.191.171.17' AND datetime='1756303098'