I followed the directions on installing the theme and the demo content, but all I get is a black screen and I can’t edit anything. I get an error code:

There has been a critical error on this website.

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Uncaught Error: Call to a member function get_builder_content_for_display() on null in /var/www/wp-content/plugins/cowidgets-elementor-addons/inc/class-cowidgets.php:328
Stack trace:
#0 /var/www/wp-content/plugins/cowidgets-elementor-addons/inc/ce-functions.php(88): CoWidgets::get_header_content()
#1 /var/www/wp-includes/class-wp-hook.php(324): cowidgets_render_header(”)
#2 /var/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(”, Array)
#3 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#4 /var/www/wp-content/themes/livecast/includes/codeless_hooks.php(14): do_action(‘codeless_hook_w…’)
#5 /var/www/wp-content/themes/livecast/header.php(45): codeless_hook_wrapper_begin()
#6 /var/www/wp-includes/template.php(810): require_once(‘/var/www/wp-con…’)
#7 /var/www/wp-includes/template.php(745): load_template(‘/var/www/wp-con…’, true, Array)
#8 /var/www/wp-includes/general-template.php(48): locate_template(Array, true, true, Array)
#9 /var/www/wp-content/themes/livecast/page.php(1