Hello There,
I have logged in to your site and investigated the issue. I found out that you have modified the footer.php file and added a line of code which is the cause of the issue.
To resolve this, you will have to do the following:
1.) Please login to your FTP and browse in the child theme’s folder wp-content/themes/x-child/
.
2.) Edit footer.php
and remove the code you have added.
3.) In your child theme’s functions.php file, you will have to insert this code instead:
// Insert HubSpot embed code
// =============================================================================
function add_hubspot_code() { ?>
<!-- Start of HubSpot Embed Code -->
<script type="text/javascript" id="hs-script-loader" async defer src="//js.hs-scripts.com/1271134.js"></script>
<!-- End of HubSpot Embed Code -->
<?php }
add_action('wp_footer', 'add_hubspot_code');
// =============================================================================
4.) The error “Scrape nonce check failed. Please try again.” when saving your changes in the WordPress File editor has just been introduce in WordPress 4.9 (https://developer.wordpress.org/reference/functions/wp_start_scraping_edited_file_errors/). This could be an issue in the latest release of WordPress. Please edit the child theme files manually instead at the moment.
Please let us know how it goes.