Fatal error: Uncaught Error: Call to undefined function Elementor\mb_strtolower() in /var/www/wp-content/plugins/elementor/includes/utils.php:698
Stack trace:
#0 /var/www/wp-content/plugins/elementor-pro/modules/custom-attributes/module.php(134): Elementor\Utils::parse_custom_attributes()
#1 /var/www/wp-includes/class-wp-hook.php(341): ElementorPro\Modules\CustomAttributes\Module->render_attributes()
#2 /var/www/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters()
#3 /var/www/wp-includes/plugin.php(522): WP_Hook->do_action()
#4 /var/www/wp-content/plugins/elementor/includes/base/element-base.php(827): do_action()
#5 /var/www/wp-content/plugins/elementor/includes/elements/column.php(1057): Elementor\Element_Base->add_render_attributes()
#6 /var/www/wp-content/plugins/elementor/includes/base/element-base.php(519): Elementor\Element_Column->add_render_attributes()
#7 /var/www/wp-content/plugins/elementor/includes/base/element-base.php(1455): Elementor\Element_Base->print_element()
#8 /var/www/wp-content/plugins/eleme in
/var/www/wp-content/plugins/elementor/includes/utils.php on line
698