Fatal error: Uncaught InvalidArgumentException: Method expects this value ----[ bool(false) ]---- to be one of the types ====[ string(6) "STRING" ]==== in /var/www/wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles-sdk-php/src/Facebook/InstantArticles/Validators/Type.php:183 Stack trace: #0 /var/www/wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles-sdk-php/src/Facebook/InstantArticles/Validators/Type.php(70): Facebook\InstantArticles\Validators\Type::throwException(false, 'STRING') #1 /var/www/wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles-sdk-php/src/Facebook/InstantArticles/Validators/Type.php(39): Facebook\InstantArticles\Validators\Type::is(false, 'STRING', true) #2 /var/www/wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles-sdk-php/src/Facebook/InstantArticles/Elements/InstantArticle.php(133): Facebook\InstantArticles\Validators\Type::enforce(false, 'STRING') #3 /var/www/wp-content/plugins/fb-instant-articles/class-instant-articles-post.php(686): Facebook\InstantArticles\Elements\InstantArticle->withCanonicalURL(false) #4 /var/www/wp-content/plugins/fb-instant-articles/class-instant-articles-post.php(882): Instant_Articles_Post->to_instant_article() #5 /var/www/wp-content/plugins/fb-instant-articles/class-instant-articles-post.php(959): Instant_Articles_Post->is_empty_after_transformation() #6 /var/www/wp-content/plugins/fb-instant-articles/facebook-instant-articles.php(357): Instant_Articles_Post->should_submit_post() #7 /var/www/wp-includes/class-wp-hook.php(324): inject_ia_markup_meta_tag('') #8 /var/www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #9 /var/www/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #10 /var/www/wp-includes/general-template.php(3052): do_action('wp_head') #11 /var/www/wp-content/themes/salient/header.php(23): wp_head() #12 /var/www/wp-includes/template.php(790): require_once('/var/www/wp-con...') #13 /var/www/wp-includes/template.php(725): load_template('/var/www/wp-con...', true, Array) #14 /var/www/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #15 /var/www/wp-content/themes/salient/404.php(14): get_header() #16 /var/www/wp-includes/template-loader.php(106): include('/var/www/wp-con...') #17 /var/www/wp-blog-header.php(19): require_once('/var/www/wp-inc...') #18 /var/www/index.php(17): require('/var/www/wp-blo...') #19 {main} thrown in /var/www/wp-content/plugins/fb-instant-articles/vendor/facebook/facebook-instant-articles-sdk-php/src/Facebook/InstantArticles/Validators/Type.php on line 183
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