MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1062 - Duplicate entry '1749463590-216.73.216.20-0' for key 'datetime'
Query:
INSERT INTO mybb_lastvisitors (`ip`,`port`,`proxy`,`uid`,`username`,`datetime`,`referrer`,`url`,`info`) VALUES ('216.73.216.20','18289','1','0','','1749463590','','/showthread.php?mode=threaded&pid=28210&tid=13812','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)')