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:368 Stack trace: #0 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata-video.php(240): 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(123): 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(897): 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(863): WPRM_Recipe->videos_metadata() #5 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata.php(307): WPRM_Recipe->video_metadata() #6 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata.php(246): WPRM_Metadata::get_metadata_details(Object(WPRM_Recipe)) #7 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata.php(200): WPRM_Metadata::get_metadata(Object(WPRM_Recipe)) #8 /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata.php(106): WPRM_Metadata::get_metadata_output(Object(WPRM_Recipe)) #9 /usr/local/www/wordpress/wp-includes/class-wp-hook.php(308): WPRM_Metadata::metadata_in_head('') #10 /usr/local/www/wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #11 /usr/local/www/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #12 /usr/local/www/wordpress/wp-includes/general-template.php(3043): do_action('wp_head') #13 /usr/local/www/wordpress/wp-content/themes/ashe/header.php(8): wp_head() #14 /usr/local/www/wordpress/wp-includes/template.php(783): require_once('/usr/local/www/...') #15 /usr/local/www/wordpress/wp-includes/template.php(718): load_template('/usr/local/www/...', true, Array) #16 /usr/local/www/wordpress/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #17 /usr/local/www/wordpress/wp-content/themes/ashe/single.php(1): get_header() #18 /usr/local/www/wordpress/wp-includes/template-loader.php(106): include('/usr/local/www/...') #19 /usr/local/www/wordpress/wp-blog-header.php(19): require_once('/usr/local/www/...') #20 /usr/local/www/wordpress/index.php(17): require('/usr/local/www/...') #21 {main} thrown in /usr/local/www/wordpress/wp-content/plugins/wp-recipe-maker/includes/public/class-wprm-metadata-video.php on line 368