I met the same problem as you did. I am using the theme “inove” for my blog, and I found that footer.php of this theme has 1 line as below:
<?php include(‘templates/end.php’); ?>
I open the end.php and found it do has the codes like this:
<?php wp_footer(); ?>
</body>
</html>
So I just copy the content of end.php to replace the line”<?php include(‘templates/end.php’); ?>” in footer.php, and the problem is solved.