Title: errors on admin screens
Last modified: December 18, 2020

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# errors on admin screens

 *  Resolved [wilderbee](https://wordpress.org/support/users/wilderbee/)
 * (@wilderbee)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/errors-on-admin-screens/)
 * This plugin was updated barely a month ago in November, all was good. But now
   with theme and all else updating to match the WordPress 5.6.0 release, warning
   messages appear on the admin screens. The errors do not show on the public view,
   only on the admin screens, and usually prevents them from reloading. All admin
   screens, not just the main dashboard.
 * When I deactivate this plugin the errors go away, thus I am reporting to you.
   I hope this can be fixed as I really like this plugin.
    Here are the warning 
   messages: Warning: array_flip() expects parameter 1 to be array, null given in/
   home/xxxxxxxx/public_html/wp-admin/includes/menu.php on line 280 Warning: Cannot
   modify header information – headers already sent by (output started at /home/
   xxxxxxxx/public_html/wp-admin/includes/menu.php:280) in /home/xxxxxxxx/public_html/
   wp-includes/functions.php on line 6360 Warning: Cannot modify header information–
   headers already sent by (output started at /home/xxxxxxxx/public_html/wp-admin/
   includes/menu.php:280) in /home/xxxxxxxx/public_html/wp-admin/includes/misc.php
   on line 1310 Warning: Cannot modify header information – headers already sent
   by (output started at /home/xxxxxxxx/public_html/wp-admin/includes/menu.php:280)
   in /home/xxxxxxxx/public_html/wp-admin/admin-header.php on line 9
 * Thank you.

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Author [Radek Mezulanik](https://wordpress.org/support/users/zedna/)
 * (@zedna)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/errors-on-admin-screens/#post-13806856)
 * Hi [@wilderbee](https://wordpress.org/support/users/wilderbee/),
    i´m glad you
   like the plugin. Can you please provide more details? I can see the error is 
   coming from WP Core files, not straight from plugin. Did you try to disable all
   the other plugins and switch to default template? I´m using this plugin on ~8
   websites and various hostings and i´m not experiencing these errors.
 *  Thread Starter [wilderbee](https://wordpress.org/support/users/wilderbee/)
 * (@wilderbee)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/errors-on-admin-screens/#post-13810789)
 * Yes I have disabled other plugins one by one but only disabling this plugin clears
   the errors. Those errors return instantly when I re-enable this plugin.
 * I also tried switching to twenty-twenty theme but errors persist, disappear when
   disabling this plugin, then reappear when enabled again.
 * Calling this Host#1:
    WordPress 5.6.0 Database Version 10.3.27-MariaDB PHP version
   7.4.11 Not multisite
 * This plugin is working on a second site, on a completely different host, with
   the same theme and mostly the same plugins with no issue:
    Calling this Host#
   2: WordPress 5.6.0 Database Version 5.7.32 PHP version 7.4.13 Not multisite
 * This plugin is also working on a third site, at Host#1 but on a different server.
   It is a multisite. Same theme and mostly the same plugins. HOWEVER, this site
   will Not be updated to WP 5.6.0 until there is time for potential consequences
   of one tender plugin unique to that site. Hopefully there will be a solution 
   to this item before I get that far ….
 * Thank you!
 *  Plugin Author [Radek Mezulanik](https://wordpress.org/support/users/zedna/)
 * (@zedna)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/errors-on-admin-screens/#post-13822485)
 * Hi [@wilderbee](https://wordpress.org/support/users/wilderbee/) i´ve released
   a fix for this.
 *  Thread Starter [wilderbee](https://wordpress.org/support/users/wilderbee/)
 * (@wilderbee)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/errors-on-admin-screens/#post-13823959)
 * Update to 2.2.2 is working Perfectly.
    Great plugin for sharing site notes with
   admins. Thank you!
 *  Plugin Author [Radek Mezulanik](https://wordpress.org/support/users/zedna/)
 * (@zedna)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/errors-on-admin-screens/#post-13938458)
 * solved

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘errors on admin screens’ is closed to new replies.

 * ![](https://ps.w.org/custom-dashboard-messages/assets/icon-256x256.png?rev=1369107)
 * [Zedna Custom Dashboard Messages](https://wordpress.org/plugins/custom-dashboard-messages/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/custom-dashboard-messages/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/custom-dashboard-messages/)
 * [Active Topics](https://wordpress.org/support/plugin/custom-dashboard-messages/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/custom-dashboard-messages/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/custom-dashboard-messages/reviews/)

 * 5 replies
 * 2 participants
 * Last reply from: [Radek Mezulanik](https://wordpress.org/support/users/zedna/)
 * Last activity: [5 years, 4 months ago](https://wordpress.org/support/topic/errors-on-admin-screens/#post-13938458)
 * Status: resolved