Title: Latest update: wp-admin pluggable.php error Last modified: April 27, 2020 --- # Latest update: wp-admin pluggable.php error * Resolved [Medical Writer](https://wordpress.org/support/users/scienterrif1c/) * (@scienterrif1c) * [6 years, 1 month ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/) * Hi, I just updated to v4.04 and when trying to reach the WP-admin of my website( WP network site) I received a pluggable.php error. Initial errors included socialsnap listings, but removing the socialsnap plugin did not solve the issue. * I then removed the WP Cloudflare Super Cache plugin (the last I updated before the error) and pluggable issue was gone. I put back socialsnap and no further issues. * The issue with pluggable.php is therefore related to WP Cloudflare Super Cache. * Thanks for looking into this. Viewing 11 replies - 1 through 11 (of 11 total) * Thread Starter [Medical Writer](https://wordpress.org/support/users/scienterrif1c/) * (@scienterrif1c) * [6 years, 1 month ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12735586) * Error: Warning: Use of undefined constant SECURE_AUTH_COOKIE – assumed ‘SECURE_AUTH_COOKIE’( this will throw an Error in a future version of PHP) in /xx/wp-includes/pluggable. php on line 788 * Warning: Cannot modify header information – headers already sent by (output started at /xx/wp-includes/pluggable.php:788) in /xx/wp-includes/pluggable.php on line 1281 * Warning: Cannot modify header information – headers already sent by (output started at /xx/wp-includes/pluggable.php:788) in /xx/wp-includes/pluggable.php on line 1284 - This reply was modified 6 years, 1 month ago by [Medical Writer](https://wordpress.org/support/users/scienterrif1c/). - This reply was modified 6 years, 1 month ago by [Medical Writer](https://wordpress.org/support/users/scienterrif1c/). * [fritzza](https://wordpress.org/support/users/fritzza/) * (@fritzza) * [6 years, 1 month ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12736317) * I’m the same way.　I had a problem with the WordPress Multi Site website. * Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/) * (@salvatorefresta) * [6 years, 1 month ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12737333) * I guys, I cannot reproduce this error. Can you please send me an email so I can investigate in your websites and fix? * Thread Starter [Medical Writer](https://wordpress.org/support/users/scienterrif1c/) * (@scienterrif1c) * [6 years, 1 month ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12737729) * Have sent you an email, please let me know if not received. * Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/) * (@salvatorefresta) * [6 years, 1 month ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12738053) * Hi [@scienterrif1c](https://wordpress.org/support/users/scienterrif1c/) , I didn’t received the email 🙁 * To fix the error I have to locate the PHP line that generates it. Without a complete log it’s complex for me, as I can’t replicate the error on my sites. * Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/) * (@salvatorefresta) * [6 years, 1 month ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12749125) * The conflict was caused because the plugin was activated for the whole multisite network. Deactivating WP cloudflare super page cache for the network and enabling it for the individual sites solved it 🙂 * Thread Starter [Medical Writer](https://wordpress.org/support/users/scienterrif1c/) * (@scienterrif1c) * [6 years ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12755036) * Thank you as always, Salvatore. Great support. * Tried to send you ‘a coffee’ but PayPal said “We’re sorry, this recipient can’t accept payments right now.” * Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/) * (@salvatorefresta) * [6 years ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12755866) * Hi [@scienterrif1c](https://wordpress.org/support/users/scienterrif1c/) , you’re welcome! * If you want, follow the instruction on the sidebar on the settings page. There is a link for the donations 🙂 * Thank you! * Thread Starter [Medical Writer](https://wordpress.org/support/users/scienterrif1c/) * (@scienterrif1c) * [6 years ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12778331) * Finally managed to do this. Thanks once more, enjoy the coffee and stay healthy and safe. * Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/) * (@salvatorefresta) * [6 years ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-12778341) * Thank you so much [@scienterrif1c](https://wordpress.org/support/users/scienterrif1c/) 🙂 The coffee was really a good coffee! 😀 * [joseleonardogalvez](https://wordpress.org/support/users/joseleonardogalvez/) * (@joseleonardogalvez) * [5 years, 9 months ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-13342148) * Gracias, espero no esatarme tomando atribuciones pero tengo varias páginas con error pluggable.php * Advertencia : array_merge (): Argument # 2 no es una matriz en /home4/galvez/ public_html/mayoresventas/wp-includes/widgets.php en la línea 589 * Advertencia : No se puede modificar la información del encabezado – los encabezados ya han sido enviados por (la salida comenzó en / home4 /galvez/public_html/mayoresventas/ wp-includes/widgets.php:589) en /home4/galvez/public_html/mayoresventas/wp-includes/ pluggable.php en la línea 1296 * Advertencia : no se puede modificar la información de cabecera – cabeceras ya enviado por (la producción comenzó en /home4/galvez/public_html/mayoresventas/ wp-includes/widgets.php:589) en /home4/galvez/public_html/mayoresventas/wp-includes/ pluggable.php en la línea 1299 * La linea 589 es esta $widget = array_merge( $widget, $options ); * Gracias por su ayuda * [joseleonardogalvez@gmail.com](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/joseleonardogalvez@gmail.com?output_format=md) Viewing 11 replies - 1 through 11 (of 11 total) The topic ‘Latest update: wp-admin pluggable.php error’ is closed to new replies. * ![](https://ps.w.org/wp-cloudflare-page-cache/assets/icon-256x256.gif?rev=3234997) * [Super Page Cache – Cloudflare Cache, Page Speed & Core Web Vitals](https://wordpress.org/plugins/wp-cloudflare-page-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-cloudflare-page-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-cloudflare-page-cache/) * [Active Topics](https://wordpress.org/support/plugin/wp-cloudflare-page-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-cloudflare-page-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-cloudflare-page-cache/reviews/) ## Tags * [pluggable.php](https://wordpress.org/support/topic-tag/pluggable-php/) * 11 replies * 4 participants * Last reply from: [joseleonardogalvez](https://wordpress.org/support/users/joseleonardogalvez/) * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/latest-update-wp-admin-pluggable-php-error/#post-13342148) * Status: resolved