DBD::mysql::st execute failed: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' NOW() )

##</code><code>##

    my $in= $DB->getDatabaseHandle->prepare(
        'REPLACE INTO iplog( user_id, ip_id, tstamp )'
      . ' VALUES( ?, ?, NOW() )'
    );
    $in->execute( getId($USER), $ip );

##</code><code>##

               1566594 Query       REPLACE INTO iplog( user_id, ip_id, tstamp ) VALUES( '5348', 1234567890, NOW() )
               1566350 Query       REPLACE INTO iplog( user_id, ip_id, tstamp ) VALUES( '806480', , NOW() )