Fatal error on Customizer

Hi,

We are using your free plugin “” experiencing a fatal error on our website when we click the “Customizer” under Appearance in the WordPress backend. All plugins, including the above mentioned one, are up to date on our website. Therefore, I believe there must be a conflict between the above plugin and others on the website.

The error is shown below…

Fatal error: Uncaught Error: Object of class stdClass could not be converted to string in /var/www/54a12df6-ec8c-495e-8e2a-9e6fa8949d26/public_html/wp-content/plugins/woocommerce-ajax-filters1/includes/functions.php:2269 Stack trace: #0 /var/www/54a12df6-ec8c-495e-8e2a-9e6fa8949d26/public_html/wp-content/plugins/woocommerce-ajax-filters1/includes/functions.php(2085): br_get_cat_hierarchy(Array, 0) #1 /var/www/54a12df6-ec8c-495e-8e2a-9e6fa8949d26/public_html/wp-content/plugins/woocommerce-ajax-filters1/includes/widget.php(1761): br_get_sub_categories(0, ‘id’, Array) #2 /var/www/54a12df6-ec8c-495e-8e2a-9e6fa8949d26/public_html/wp-content/plugins/woocommerce-ajax-filters1/includes/widget.php(1446): BeRocket_AAPF_Widget::get_product_categories(NULL) #3 /var/www/54a12df6-ec8c-495e-8e2a-9e6fa8949d26/public_html/wp-includes/class-wp-widget.php(535): BeRocket_AAPF_Widget->form(Array) #4 /var/www/54a12df6-ec8c-495e-8e2a-9e6fa8949d26/public_html/wp-admin/includes/widgets.php(274): WP_Widget->form_callback(Array) #5 /var/www/54a12df in /var/www/54a12df6-ec8c-495e-8e2a-9e6fa8949d26/public_html/wp-content/plugins/woocommerce-ajax-filters1/includes/functions.php on line 2269

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