Fatal error: Uncaught Error: Call to undefined function MarkupMarkdown\Core\wp_is_rest_endpoint() in /home/web13c/bistro.site/public_html/wp-content/plugins/markup-markdown/MarkupMarkdown/Core/Support.php:304 Stack trace: #0 /home/web13c/bistro.site/public_html/wp-content/plugins/markup-markdown/MarkupMarkdown/Core/Support.php(327): MarkupMarkdown\Core\Support->content_data('<h2>XAMPP\xE3\x81\xAEP