Critical Error

Hi there,?

I basically was editing the header (get in touch section) of my site and as I was editing the links at the bottom (social media) it just ruined the whole site an everything crumbled. I then redid THE ENTIRE site and got to the same point and it broke the whole site again.

Please help me fix it, otherwise I will have wasted 20 hours for nothing, im okay with redoing it twice but not again.?

I think it might be the lite and pro elements plugins clashing, please can you help. (error posted below)

Peakhopper.co.uk

ERROR HERE

This is the error message I'm seeing on the backend: [10-Feb-2024 15:12:50 UTC] PHP Fatal error:? Uncaught ValueError: Unknown format specifier "C" in /wordpress/core/6.4.3/wp-includes/nav-menu-template.php:285
Stack trace:
#0 /wordpress/core/6.4.3/wp-includes/nav-menu-template.php(285): sprintf('<ul id="%1$s" c...', 'menu-main-menu', 'elementskit-nav...', '<li id="menu-it...')
#1 /srv/htdocs/wp-content/plugins/elementskit-lite/widgets/nav-menu/nav-menu.php(1669): wp_nav_menu(Object(stdClass))
#2 /srv/htdocs/wp-content/plugins/elementskit-lite/widgets/nav-menu/nav-menu.php(1584): Elementor\ElementsKit_Widget_Nav_Menu->render_raw()
#3 /srv/htdocs/wp-content/plugins/elementor/includes/base/controls-stack.php(2297): Elementor\ElementsKit_Widget_Nav_Menu->render()
#4 /srv/htdocs/wp-content/plugins/elementor/includes/base/widget-base.php(614): Elementor\Controls_Stack->render_by_mode()
#5 /srv/htdocs/wp-content/plugins/elementor/includes/base/widget-base.php(678): Elementor\Widget_Base->render_content()
#6 /srv/htdocs/wp-content/plugins/elementor/includes/db.php(202): Elementor\Widget_Base->render_plain_content()
#7 /srv/htdocs/wp-content/plugins/elementor/includes/db.php(208): Elementor\DB->render_element_plain_content(Array)
#8 /srv/htdocs/wp-content/plugins/elementor/includes/db.php(208): Elementor\DB->render_element_plain_content(Array)
#9 /srv/htdocs/wp-content/plugins/elementor/includes/db.php(208): Elementor\DB->render_element_plain_content(Array)
#10 /srv/htdocs/wp-content/plugins/elementor/includes/db.php(558): Elementor\DB->render_element_plain_content(Array)
#11 /srv/htdocs/wp-content/plugins/elementor/includes/db.php(539): Elementor\DB->get_plain_text_from_data(Array)
#12 /srv/htdocs/wp-content/plugins/elementor/includes/db.php(230): Elementor\DB->get_plain_text(21801)
#13 /srv/htdocs/wp-content/plugins/elementor/core/base/document.php(1301): Elementor\DB->save_plain_text(21801)
#14 /srv/htdocs/wp-content/plugins/elementor/core/base/document.php(797): Elementor\Core\Base\Document->save_elements(Array)
#15 /srv/htdocs/wp-content/plugins/elementor/core/documents-manager.php(545): Elementor\Core\Base\Document->save(Array)
#16 [internal function]: Elementor\Core\Documents_Manager->ajax_save(Array, Object(Elementor\Core\Common\Modules\Ajax\Module))
#17 /srv/htdocs/wp-content/plugins/elementor/core/common/modules/ajax/module.php(176): call_user_func(Array, Array, Object(Elementor\Core\Common\Modules\Ajax\Module))
#18 /wordpress/core/6.4.3/wp-includes/class-wp-hook.php(324): Elementor\Core\Common\Modules\Ajax\Module->handle_ajax_request('')
#19 /wordpress/core/6.4.3/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#20 /wordpress/core/6.4.3/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#21 /wordpress/core/6.4.3/wp-admin/admin-ajax.php(188): do_action('wp_ajax_element...')
#22 {main}
? thrown in /wordpress/core/6.4.3/wp-includes/nav-menu-template.php on line 285?

The page I need help with: [log in to see the link]