Title: WordPress Critical Error
Last modified: June 19, 2023

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# WordPress Critical Error

 *  Resolved [claudioelbrites](https://wordpress.org/support/users/claudioelbrites/)
 * (@claudioelbrites)
 * [2 years, 11 months ago](https://wordpress.org/support/topic/wordpress-critical-error-9/)
 * Um erro do tipo `E_ERROR` foi causado na linha `160` do ficheiro `/home/oraadmin/
   public_html/wp-content/plugins/simple-history/inc/class-autoloader.php`. Mensagem
   de erro: `Uncaught Error: Call to undefined function Simple_History\mb_strtolower()
   in /home/oraadmin/public_html/wp-content/plugins/simple-history/inc/class-autoloader.
   php:160 Stack trace: #0 /home/oraadmin/public_html/wp-content/plugins/simple-
   history/inc/class-autoloader.php(121): Simple_History\Autoloader->load_mapped_file('
   Simple_History\\', 'Loggers\\Logger') #1 [internal function]: Simple_History\
   Autoloader->load_class('Simple_History\\...') #2 /home/oraadmin/public_html/wp-
   content/plugins/simple-history/inc/deprecated/class-simplelogger.php(10): spl_autoload_call('
   Simple_History\\...') #3 /home/oraadmin/public_html/wp-content/plugins/simple-
   history/index.php(63): require_once('/home/oraadmin/...') #4 /home/oraadmin/public_html/
   wp-settings.php(453): include_once('/home/oraadmin/...') #5 /home/oraadmin/public_html/
   wp-config.php(96): require_once('/home/oraadmin/...') #6 /home/oraadmin/public_html/
   wp-load.php(50): require_once('/home/oraadmin/...') #7 /home/oraadmin/public_html/
   wp-login.php(12): require('/home/ora`
    -  This topic was modified 2 years, 11 months ago by [claudioelbrites](https://wordpress.org/support/users/claudioelbrites/).
      Reason: I fixed all the websites myself by deleting the plugin

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

 *  Plugin Author [Pär Thernström](https://wordpress.org/support/users/eskapism/)
 * (@eskapism)
 * [2 years, 11 months ago](https://wordpress.org/support/topic/wordpress-critical-error-9/#post-16832621)
 * Thanks [@claudioelbrites](https://wordpress.org/support/users/claudioelbrites/)
   for reporting this. I have created an issue regarding this:
 * [https://github.com/bonny/WordPress-Simple-History/issues/351](https://github.com/bonny/WordPress-Simple-History/issues/351)
 *  Plugin Author [Pär Thernström](https://wordpress.org/support/users/eskapism/)
 * (@eskapism)
 * [2 years, 11 months ago](https://wordpress.org/support/topic/wordpress-critical-error-9/#post-16832688)
 * The just released version 4.0.1 should fix this.

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

The topic ‘WordPress Critical Error’ is closed to new replies.

 * ![](https://ps.w.org/simple-history/assets/icon.svg?rev=3225008)
 * [Simple History – Track, Log, and Audit WordPress Changes](https://wordpress.org/plugins/simple-history/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/simple-history/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/simple-history/)
 * [Active Topics](https://wordpress.org/support/plugin/simple-history/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/simple-history/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/simple-history/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Pär Thernström](https://wordpress.org/support/users/eskapism/)
 * Last activity: [2 years, 11 months ago](https://wordpress.org/support/topic/wordpress-critical-error-9/#post-16832688)
 * Status: resolved