Product Filter widget makes the page not load

Hello,

I’ve created a widget area in the theme Im using and it works for other widgets such as Brand dropdown list etc but when I try to add the product filter widget no products are loaded on archive pages at all.

System status:
Array
(
[home_url] => https://nya.smyckendahls.se
[site_url] => https://nya.smyckendahls.se
[version] => 3.4.5
[wp_version] => 4.9.8
[wp_multisite] =>
[wp_memory_limit] => 40M
[wp_debug_mode] =>
[wp_cron] => 1
[language] => sv_SE
[server_info] => Apache/2.4.34 (FreeBSD) mpm-itk/2.4.7-04 PHP/7.2.8
[php_version] => 7.2.8
[php_post_max_size] => 200M
[php_max_execution_time] => 180
[php_max_input_vars] => 5000
[max_upload_size] => 209715200
[default_timezone] => UTC
[theme] => Array
(
[name] => Porto Child
[version] => 1.1
[parent_theme] => Porto
)

[active_plugins] => Array
(
[0] => dhvc-woocommerce-page/dhvc-woocommerce-page.php
[1] => duplicator/duplicator.php
[2] => flexible-product-fields/flexible-product-fields.php
[3] => js_composer/js_composer.php
[4] => klarna-checkout-for-woocommerce/klarna-checkout-for-woocommerce.php
[5] => perfect-woocommerce-brands/main.php
[6] => porto-functionality/porto-functionality.php
[7] => revslider/revslider.php
[8] => woocommerce-addwish/woocommerce-addwish.php
[9] => woocommerce-products-filter/index.php
[10] => woocommerce/woocommerce.php
)

[pwb_options] => Array
(
[version] => 1.6.5
[wc_pwb_admin_tab_brand_single_position] => after_title
[old_wc_pwb_admin_tab_slug] => brand
[wc_pwb_notice_plugin_review] =>
[wc_pwb_admin_tab_slug] =>
[wc_pwb_admin_tab_brand_desc] => yes
[wc_pwb_admin_tab_brand_single_product_tab] => no
[wc_pwb_admin_tab_brands_in_loop] => no
[wc_pwb_admin_tab_brands_in_single] => brand_image
[wc_pwb_admin_tab_brand_logo_size] => thumbnail
)

)

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