Title: Apache errors in my logs
Last modified: April 30, 2022

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# Apache errors in my logs

 *  Resolved [Daniel](https://wordpress.org/support/users/dhoffmann/)
 * (@dhoffmann)
 * [4 years, 1 month ago](https://wordpress.org/support/topic/apache-errors-in-my-logs/)
 * Hello,
 * after some days with breeze I checked my logs and found a lot of errors like 
   that:
 * AH01071: Got error ‘PHP message: PHP Fatal error: Uncaught Error: Call to undefined
   function is_404() in /var/www/vhosts/…/httpdocs/wp-content/plugins/breeze/inc/
   cache/execute-cache.php:224\nStack trace:\n#0 [internal function]: breeze_cache()\
   n#1 /var/www/vhosts/…/httpdocs/wp-includes/functions.php(5219): ob_end_flush()\
   n#2 /var/www/vhosts/…/httpdocs/wp-includes/class-wp-hook.php(307): wp_ob_end_flush_all()\
   n#3 /var/www/vhosts/…/httpdocs/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters()\
   n#4 /var/www/vhosts/…/httpdocs/wp-includes/plugin.php(474): WP_Hook->do_action()\
   n#5 /var/www/vhosts/…/httpdocs/wp-includes/load.php(1100): do_action()\n#6 [internal
   function]: shutdown_action_hook()\n#7 {main}\n thrown in /var/www/vhosts/…/httpdocs/
   wp-content/plugins/breeze/inc/cache/execute-cache.php on line 224’
 * As I’m not a coder, could you tell me, if this is problematic or what I can do?
 * Best, Daniel
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fapache-errors-in-my-logs%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Author [adeelkhan](https://wordpress.org/support/users/adeelkhan/)
 * (@adeelkhan)
 * [4 years, 1 month ago](https://wordpress.org/support/topic/apache-errors-in-my-logs/#post-15620745)
 * you may solve it by switching off Zlib.output_compression in php.ini
    Here is
   the details step of WordPress support. Please have a look. [https://wordpress.org/support/topic/notice-ob_end_flush-failed-to-send-buffer-of-zlib-output-compression-0/](https://wordpress.org/support/topic/notice-ob_end_flush-failed-to-send-buffer-of-zlib-output-compression-0/)
 *  Thread Starter [Daniel](https://wordpress.org/support/users/dhoffmann/)
 * (@dhoffmann)
 * [4 years, 1 month ago](https://wordpress.org/support/topic/apache-errors-in-my-logs/#post-15622217)
 * Hello [@adeelkhan](https://wordpress.org/support/users/adeelkhan/)
    thanks for
   your reply. The value `zlib.output_compression = Off` is already set in my php.
   ini. Any other idea? Best, Daniel
 *  Plugin Author [adeelkhan](https://wordpress.org/support/users/adeelkhan/)
 * (@adeelkhan)
 * [4 years ago](https://wordpress.org/support/topic/apache-errors-in-my-logs/#post-15624483)
 * Did you try another option “simply unhook the flush action”?
 *  Thread Starter [Daniel](https://wordpress.org/support/users/dhoffmann/)
 * (@dhoffmann)
 * [4 years ago](https://wordpress.org/support/topic/apache-errors-in-my-logs/#post-15625950)
 * Yes I also tried that. The log is still full.
 * The more it is on all subsites of my mutlisite that are mapped on a domain as
   well as the root site.
 * PHP-Version is 7.4.29 on Ubuntu 18.
 *  Plugin Author [adeelkhan](https://wordpress.org/support/users/adeelkhan/)
 * (@adeelkhan)
 * [4 years ago](https://wordpress.org/support/topic/apache-errors-in-my-logs/#post-15631631)
 * You may resolve it by deactivating all plugins and updating your WordPress.
    
   Activate plugins one by one and check the logs. Mostly the fatal errors you mentioned
   occur while there is an update missing/stop in some middle process.
 * Try [manually resetting your plugins](https://wordpress.org/support/article/faq-troubleshooting/#how-to-deactivate-all-plugins-when-not-able-to-access-the-administrative-menus)(
   no Dashboard access required). If that resolves the issue, reactivate each one
   individually until you find the cause.
 * If that does not resolve the issue, access your server via SFTP or FTP, or a 
   file manager in your hosting account’s control panel, navigate to /wp-content/
   themes/and rename the directory of your currently active theme. This will force
   the default theme to activate and hopefully rule out a theme-specific issue (
   theme functions can interfere like plugins).

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

The topic ‘Apache errors in my logs’ is closed to new replies.

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 * 5 replies
 * 2 participants
 * Last reply from: [adeelkhan](https://wordpress.org/support/users/adeelkhan/)
 * Last activity: [4 years ago](https://wordpress.org/support/topic/apache-errors-in-my-logs/#post-15631631)
 * Status: resolved