Title: Fatal Error wp-blog-header.php
Last modified: January 27, 2021

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# Fatal Error wp-blog-header.php

 *  [alexblancflora](https://wordpress.org/support/users/alexblancflora/)
 * (@alexblancflora)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-wp-blog-header-php/)
 * Hello, I’m having trouble impossible to solve for now on my website.
    Displaying
 * Fatal error: Uncaught Error: Call to undefined function wp() in /home/www/mwz5737/
   floracbd.fr/wordpress/wordpress/wp-blog-header.php:16 Stack trace: #0 /home/www/
   mwz5737/floracbd.fr/wordpress/wordpress/index.php(17): require() #1 {main} thrown
   in /home/www/mwz5737/floracbd.fr/wordpress/wordpress/wp-blog-header.php on line
   16
 * We already tried the steps mentionned here
 * [https://wordpress.org/support/topic/getting-fatal-error-repeatedly/#new-post](https://wordpress.org/support/topic/getting-fatal-error-repeatedly/#new-post)
 * And tried to backup an older version of the website but nothing works.
 * Can anyone help please ?
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-wp-blog-header-php%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Moderator [t-p](https://wordpress.org/support/users/t-p/)
 * (@t-p)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-wp-blog-header-php/#post-13967545)
 * Where you trying to update WordPress/plugins/theme etc. before this error happened?
 *  Thread Starter [alexblancflora](https://wordpress.org/support/users/alexblancflora/)
 * (@alexblancflora)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-wp-blog-header-php/#post-13968310)
 * Hello, thanks for reply.
    No automatic update was activated. And I wasn’t updating
   any plugin/theme or other. If anyone can help I’b so glad my website is off for
   almost a day and I really need it. Thank you
 *  Thread Starter [alexblancflora](https://wordpress.org/support/users/alexblancflora/)
 * (@alexblancflora)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-wp-blog-header-php/#post-13974750)
 * Hello, for me it wasn’t error 500 but :
 * Fatal error: Uncaught Error: Call to undefined function wp() in /home/www/mwz5737/
   floracbd.fr/wordpress/wordpress/wp-blog-header.php:16 Stack trace: #0 /home/www/
   mwz5737/floracbd.fr/wordpress/wordpress/index.php(17): require() #1 {main} thrown
   in /home/www/mwz5737/floracbd.fr/wordpress/wordpress/wp-blog-header.php on line
   16
 * It was an attack and solve it by cleaning and removing the hack
 *  Moderator [t-p](https://wordpress.org/support/users/t-p/)
 * (@t-p)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-wp-blog-header-php/#post-13976486)
 * Side note to [@azaf94](https://wordpress.org/support/users/azaf94/) ,
 * Please do not jump into other topics and detract from their problem. If the troubleshooting
   already posted made no difference for you, then, as per the [Forum Welcome](https://wordpress.org/support/welcome/).
   A lot more people will see your post, and that way you stand a good chance of
   getting the assistance you want. Despite any similarity in symptoms, your issue
   is likely to be completely different because of possible differences in physical
   servers, accounts, hosts, plugins, theme, configurations, etc. Thus one problem,
   on one setup is not indicative of the functionality and reliability of an application
   as a whole.
 * I’ll be archiving your post.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Fatal Error wp-blog-header.php’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 4 replies
 * 3 participants
 * Last reply from: [t-p](https://wordpress.org/support/users/t-p/)
 * Last activity: [5 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-wp-blog-header-php/#post-13976486)
 * Status: not resolved

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