Title: PHP Fatal error: Call to undefined function get_header() theme-compat/embed.php
Last modified: October 29, 2017

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# PHP Fatal error: Call to undefined function get_header() theme-compat/embed.php

 *  [OreilleMalade](https://wordpress.org/support/users/oreillemalade/)
 * (@oreillemalade)
 * [8 years, 7 months ago](https://wordpress.org/support/topic/php-fatal-error-call-to-undefined-function-get_header-theme-compat-embed-php/)
 * Hi,
 * I’ve got a problem on several sites.
    Error generates the following error message:
 * mod_fcgid: stderr: PHP Fatal error: Call to undefined function get_header() in
   XXX/wp-includes/theme-compat/embed.php on line 13, referer: [https://XXX/wp-includes/theme-compat/embed.php](https://XXX/wp-includes/theme-compat/embed.php)
 * Any idea?
 * Thanks!

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/)
 * (@sterndata)
 * Volunteer Forum Moderator
 * [8 years, 7 months ago](https://wordpress.org/support/topic/php-fatal-error-call-to-undefined-function-get_header-theme-compat-embed-php/#post-9631054)
 * Check the referrer — you may see that if someone is directly hitting PHP files(
   i.e., someone looking to see if you have vulnerable files) on your site.
 * Do you see the error if the site is approached through “proper” pathways?
 *  Thread Starter [OreilleMalade](https://wordpress.org/support/users/oreillemalade/)
 * (@oreillemalade)
 * [8 years, 7 months ago](https://wordpress.org/support/topic/php-fatal-error-call-to-undefined-function-get_header-theme-compat-embed-php/#post-9640673)
 * Hi [@sterndata](https://wordpress.org/support/users/sterndata/)
 * Thanks for your answer 🙂
 * The referrer is my own site so it’s like:
 * mod_fcgid: stderr: PHP Fatal error: Call to undefined function get_header() in
   MYSITE/wp-includes/theme-compat/embed.php on line 13, referer: [https://MYSITE/wp-includes/theme-compat/embed.php](https://MYSITE/wp-includes/theme-compat/embed.php)
 * > Do you see the error if the site is approached through “proper” pathways?
 * What do you mean exactly?
 * Thanks!
 *  Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/)
 * (@sterndata)
 * Volunteer Forum Moderator
 * [8 years, 7 months ago](https://wordpress.org/support/topic/php-fatal-error-call-to-undefined-function-get_header-theme-compat-embed-php/#post-9640710)
 * Is “embed.php” being referenced directly via a GET or POST? That’s the sort of
   error you’d see if it were.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘PHP Fatal error: Call to undefined function get_header() theme-compat/
embed.php’ is closed to new replies.

## Tags

 * [Call to undefined function:](https://wordpress.org/support/topic-tag/call-to-undefined-function/)
 * [PHP Fatal error](https://wordpress.org/support/topic-tag/php-fatal-error/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/)
 * Last activity: [8 years, 7 months ago](https://wordpress.org/support/topic/php-fatal-error-call-to-undefined-function-get_header-theme-compat-embed-php/#post-9640710)
 * Status: not resolved

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