Fatal error: Uncaught Error: Call to undefined function filter_var() in /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata-video.php:363 Stack trace: #0 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata-video.php(237): WPRM_MetadataVideo::check_for_oembed('https://www.you...') #1 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata-video.php(121): WPRM_MetadataVideo::check_for_youtube_embed('https://youtu.b...') #2 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata-video.php(53): WPRM_MetadataVideo::get_video_metadata_for_embed('https://youtu.b...', Object(WPRM_Recipe)) #3 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-recipe.php(898): WPRM_MetadataVideo::get_video_metadata_for_recipe(Object(WPRM_Recipe)) #4 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-recipe.php(86 in /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata-video.php on line 363