Website just crashed

<p>I have a dilemma on my hands right now. Website worked beautifully for a long tome. No changes have been made to the site. (Other than maybe an automatic update). I am using the Hydra template as you suggested works with BoldGrid. We also use WooCommerce. Any time one clicks on any link at comes back with:

------------------------------------- Error------------------------------------------- <b>Fatal error</b>: Uncaught Error: Call to undefined function wc_get_loop_prop() in /home/[redacted]/public_html/wp-content/plugins/woocommerce/includes/class-wc-query.php:376 Stack trace: #0 /home/[redacted]/public_html/wp-content/plugins/woocommerce/includes/class-wc-query.php(363): WC_Query->adjust_total_pages() #1 /home/[redacted]/public_html/wp-includes/class-wp-hook.php(289): WC_Query->handle_get_posts(Array) #2 /home/[redacted]/public_html/wp-includes/plugin.php(249): WP_Hook->apply_filters(Array, Array) #3 /home/[redacted]/public_html/wp-includes/class-wp-query.php(3190): apply_filters_ref_array('the_posts', Array) #4 /home/[redacted]/public_html/wp-includes/class-wp-query.php(3448): WP_Query->get_posts() #5 /home/[redacted]/public_html/wp-includes/class-wp-query.php(3559): WP_Query->query(Array) #6 /home/[redacted]/public_html/wp-includes/rewrite.php(612): WP_Query->__construct(Array) #7 /home/[redacted]/public_html/wp-content/themes/boldgrid-hydra/inc/boldgrid-theme-framework/includes/class-boldgrid-framework-template-config.php(368): url_to_po in <b>/home/[redacted]/public_html/wp-content/plugins/woocommerce/includes/class-wc-query.php</b> on line <b>376</b></p><div class="wp-die-message">There has been a critical error on your website.-------------------------------------ERROR END--------------------------------------------</div><p>I also see that Woocommerce is telling me: Your theme (Hydra) contains outdated copies of some WooCommerce template files. These files may need updating to ensure they are compatible with the current version of WooCommerce. Suggestions to fix this:</p>

1. Update your theme to the latest version. If no update is available contact your theme author asking about compatibility with the current WooCommerce version.
2. If you copied over a template file to change something, then you will need to copy the new version of the template and apply your changes again.

Where do I go from here? This site is basically ONLY showing the home page and any link you click on is giving you the error. Thank you for your help ASAP! Klaus