Title: error mu-plugins
Last modified: June 26, 2020

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# error mu-plugins

 *  Resolved [gerardphilippe](https://wordpress.org/support/users/gerardphilippe/)
 * (@gerardphilippe)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/error-mu-plugins/)
 * hello I have problems on my wordpress site here is the message which is posted
 * Warning: Cannot modify header information – headers already sent by (output started
   at /customers/0/8/4/sectester.one/httpd.www/wp-content/mu-plugins/rms_unique_wp_mu_pl_fl_nm.
   php:6) in /customers/0/8/4/sectester.one/httpd.www/wp-admin/includes/misc.php
   on line 1282
 * what can I do to fix this mistake? Thank you for your help.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-mu-plugins%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/)
 * (@sterndata)
 * Volunteer Forum Moderator
 * [5 years, 11 months ago](https://wordpress.org/support/topic/error-mu-plugins/#post-13039098)
 * Googling around, it seems that this file may be the result of using a nulled 
   plugin. Delete the file then assume your site is hacked and de-louse it.
 * Get a fresh cup of coffee, take a deep breath and carefully follow [this guide](https://wordpress.org/support/article/faq-my-site-was-hacked/).
   When you’re done, you may want to implement some (if not all) of [the recommended security measures](https://wordpress.org/support/article/hardening-wordpress/).
 * If you’re unable to clean your site(s) successfully, there are reputable organizations
   that can clean your sites for you. Sucuri and Wordfence are a couple.
 *  [Aims Infosoft](https://wordpress.org/support/users/aimsinfosofts/)
 * (@aimsinfosofts)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/error-mu-plugins/#post-13039198)
 * Hello,
 * Sometimes the headers already sent error is caused by an extra space after closing
   the php ?> tag, so you can just remove that, and it will fix the issue.
 * May be it will work for you
 * Thanks

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘error mu-plugins’ is closed to new replies.

## Tags

 * [mu-plugins](https://wordpress.org/support/topic-tag/mu-plugins/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 4 participants
 * Last reply from: [Aims Infosoft](https://wordpress.org/support/users/aimsinfosofts/)
 * Last activity: [5 years, 11 months ago](https://wordpress.org/support/topic/error-mu-plugins/#post-13039198)
 * Status: resolved

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