Trouble with layer slider !

I cant acces my pages for editing it says following :

his problem occurs when trying to edit post or pages. It looks like there is a Layer Slider issue that breaks the page. We have disabled ad uninstalled the “Layer Slider” in the Layout Builder (remove theme plugin and slide) option, but the issue is still persists. Please advise.

The website (http://complete-2u.dk/) is running WordPress v5.5 with the Enfold theme, all plugins, CMS and theme have all been updated.

This is the error, when trying to edit post or pages (displaying at the top of a otherwise white blank page):

Fatal error: Uncaught Error: Call to undefined function avia_find_layersliders() in /var/www/complete-2u.dk/public_html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/slideshow_layerslider.php:41 Stack trace: #0 /var/www/complete-2u.dk/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/shortcode-template.class.php(618): avia_sc_layerslider->editor_element(Array) #1 /var/www/complete-2u.dk/public_html/wp-content/themes/enfold/config-templatebuilder/avia-template-builder/php/template-builder.class.php(1356): aviaShortcodeTemplate->prepare_editor_element() #2 /var/www/complete-2u.dk/public_html/wp-includes/class-wp-hook.php(287): AviaBuilder->js_template_editor_elements(”) #3 /var/www/complete-2u.dk/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(”, Array) #4 /var/www/complete-2u.dk/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #5 /var/www/complete-2u.dk/public_html/wp-includes/media-template.php(1467): do_action(‘print_media_te in /var/www/complete-2u.dk/public_html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/slideshow_layerslider.php on line 41

There has been a critical error on your website. Please check your site admin email inbox for instructions.

—————-

Med venlig hilsen

Jan Nordstrøm

http://www.pixelhouse.dk