Title: Fatal PHP error with WordPress 5 Last modified: December 11, 2018 --- # Fatal PHP error with WordPress 5 * Resolved [David Robinson](https://wordpress.org/support/users/foxrobinson/) * (@foxrobinson) * [7 years, 5 months ago](https://wordpress.org/support/topic/fatal-php-error-with-wordpress-5/) * When updating to WordPress 5 this plugin creates a fatal PHP error on the frontend and backend: * ” Fatal error: Uncaught Error: Call to a member function using_index_permalinks() on null in /home/slaauk10/public_html/w2/wp-includes/rest-api.php:344 Stack trace:# 0 /home/slaauk10/public_html/w2/wp-includes/rest-api.php(404): get_rest_url(NULL,‘/ embedpress/v1/…’, ‘json’) #1 /home/slaauk10/public_html/w2/wp-content/plugins/ embedpress/EmbedPress/Core.php(329): rest_url(’embedpress/v1/o…’) #2 /home/slaauk10/ public_html/w2/wp-includes/class-wp-hook.php(286): EmbedPress\Core->addOEmbedProviders( Array) #3 /home/slaauk10/public_html/w2/wp-includes/plugin.php(203): WP_Hook- >apply_filters(Array, Array) #4 /home/slaauk10/public_html/w2/wp-includes/class- oembed.php(221): apply_filters(‘oembed_provider…’, Array) #5 /home/slaauk10/public_html/ w2/wp-includes/embed.php(115): WP_oEmbed->__construct() #6 /home/slaauk10/public_html/ w2/wp-includes/embed.php(134): _wp_oembed_get_object() #7 /home/slaauk10/public_html/ w2/wp-content/plugins/jetpack/class.jetpack.php(1820): wp_oembed_add_provider(‘ [https://cloudup…’](https://cloudup…’);, ‘[https://cloudup](https://cloudup).. in /home/slaauk10/public_html/w2/wp-includes/rest-api.php on line 344″ * Disabling the plugin brings the site back up * Regards, * David * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-php-error-with-wordpress-5%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 1 replies (of 1 total) * Plugin Contributor [EmbedPress](https://wordpress.org/support/users/embedpress/) * (@embedpress) * [7 years, 5 months ago](https://wordpress.org/support/topic/fatal-php-error-with-wordpress-5/#post-10974242) * Hi [@foxrobinson](https://wordpress.org/support/users/foxrobinson/) * Thanks for using EmbedPress and sorry for the issue. * Could you email [help@embedpress.com](https://wordpress.org/support/topic/fatal-php-error-with-wordpress-5/help@embedpress.com?output_format=md) with more details of your set up, please. You can get that from a plugin like this: [https://wordpress.org/plugins/health-check/](https://wordpress.org/plugins/health-check/) * What’s your PHP version? Do you have any more embed plugins? etc Viewing 1 replies (of 1 total) The topic ‘Fatal PHP error with WordPress 5’ is closed to new replies. * ![](https://ps.w.org/embedpress/assets/icon-128x128.gif?rev=3419899) * [EmbedPress – PDF Embedder, Embed PDF viewer, YouTube Videos, 3D FlipBook, Social feeds & more](https://wordpress.org/plugins/embedpress/) * [Frequently Asked Questions](https://wordpress.org/plugins/embedpress/#faq) * [Support Threads](https://wordpress.org/support/plugin/embedpress/) * [Active Topics](https://wordpress.org/support/plugin/embedpress/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/embedpress/unresolved/) * [Reviews](https://wordpress.org/support/plugin/embedpress/reviews/) * 1 reply * 2 participants * Last reply from: [EmbedPress](https://wordpress.org/support/users/embedpress/) * Last activity: [7 years, 5 months ago](https://wordpress.org/support/topic/fatal-php-error-with-wordpress-5/#post-10974242) * Status: resolved