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