Fatal error: Uncaught Error: Call to undefined function mb_strtoupper() in /home/ektaraindia/public_html/wp-content/plugins/wordpress-seo/src/generators/schema/article.php:226 Stack trace: #0 /home/ektaraindia/public_html/wp-content/plugins/wordpress-seo/src/generators/schema/article.php(60): Yoast\WP\SEO\Generators\Schema\Article->word_count('\xD0\x9C\xD0\x95\xD0\x94\xD0\x98\xD0\xA2\xD0\x90\xD0\xA6\xD0...', '\xD0\x9C\xD0\x95\xD0\x94\xD0\x98\xD0\xA2\xD0\x90\xD0\xA6\xD0...') #1 /home/ektaraindia/public_html/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php(129): Yoast\WP\SEO\Generators\Schema\Article->generate() #2 /home/ektaraindia/public_html/wp-content/plugins/wordpress-seo/src/generators/schema-generator.php(76): Yoast\WP\SEO\Generators\Schema_Generator->generate_graph(Array, Object(Yoast\WP\SEO\Context\Meta_Tags_Context)) #3 /home/ektaraindia/public_html/wp-content/plugins/wordpress-seo/src/presentations/indexable-presentation.php(718): Yoast\WP\SEO\Generators\Schema_Generator->generate(Object(Yoast in /home/ektaraindia/public_html/wp-content/plugins/wordpress-seo/src/generators/schema/article.php on line 226