Fatal error: Uncaught Error: Class 'DOMDocument' not found in /home/jola/domains/nalysejgorze.pl/public_html/wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles-sdk-php/src/Facebook/InstantArticles/Transformer/Transformer.php:189 Stack trace: #0 /home/jola/domains/nalysejgorze.pl/public_html/wp-content/plugins/fb-instant-articles/class-instant-articles-post.php(644): Facebook\InstantArticles\Transformer\Transformer->transformString(Object(Facebook\InstantArticles\Elements\Header), '<h1>Wymarzy\xC5\x82am...', 'UTF-8') #1 /home/jola/domains/nalysejgorze.pl/public_html/wp-content/plugins/fb-instant-articles/class-instant-articles-post.php(886): Instant_Articles_Post->to_instant_article() #2 /home/jola/domains/nalysejgorze.pl/public_html/wp-content/plugins/fb-instant-articles/class-instant-articles-post.php(963): Instant_Articles_Post->is_empty_after_transformation() #3 /home/jola/domains/nalysejgorze.pl/public_html/wp-content/plugins/fb-instant-articles/facebook-instant-articles.php(375): Instant in /home/jola/domains/nalysejgorze.pl/public_html/wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles-sdk-php/src/Facebook/InstantArticles/Transformer/Transformer.php on line 189