Fatal error: Uncaught Error: Call to undefined function mb_strtoupper() in /home/clujtoda/public_html/wp-content/plugins/wordpress-seo/src/generators/schema/article.php:226
Stack trace:
#0 /home/clujtoda/public_html/wp-content/plugins/wordpress-seo/src/generators/schema/article.php(60): Yoast\WP\SEO\Generators\Schema\Article->word_count('Israelul reia n...', 'Israelul reia n...')
#1 /home/clujtoda/public_html/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php(128): Yoast\WP\SEO\Generators\Schema\Article->generate()
#2 /home/clujtoda/public_html/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php(75): Yoast\WP\SEO\Generators\Schema_Generator->generate_graph(Array, Object(Yoast\WP\SEO\Context\Meta_Tags_Context))
#3 /home/clujtoda/public_html/wp-content/plugins/wordpress-seo/src/presentations/indexable-presentation.php(720): Yoast\WP\SEO\Generators\Schema_Generator->generate(Object(Yoast\WP\SEO\Context\Meta_Tags_Context))
#4 /home/clujtoda/public_html/wp-content/plugins/wordpress-seo/src/pr in /home/clujtoda/public_html/wp-content/plugins/wordpress-seo/src/generators/schema/article.php on line 226