Title: Plugin broke my installation
Last modified: August 21, 2016

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# Plugin broke my installation

 *  [ChrisHPZ](https://wordpress.org/support/users/chrishpz/)
 * (@chrishpz)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/plugin-broke-my-installation/)
 * Tried to activate this plugin and immediately got a fatal error to an undefined
   function.
 * Fatal error: Call to undefined function Nette\Utils\mb_strtoupper() in /wp-content/
   plugins/simple-subscribe/libs/Nette/Nette.min.php on line 7191
 * If anyone reads this, you’ll need to remove the plugin via an ftp client otherwise
   wp-admin won’t be accessible. This is weird but I did install this plugin on 
   my local installation of wordpress, and it worked just fine. Maybe some file 
   got lost in the download process?
 * Spoke too soon. I uploaded my local installation of this plugin to my server 
   and fatal error still triggers. But it works on a local install. WTH?!?!?!
 * [https://wordpress.org/plugins/simple-subscribe/](https://wordpress.org/plugins/simple-subscribe/)

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

 *  Plugin Author [tanaylakhani](https://wordpress.org/support/users/tanaylakhani/)
 * (@tanaylakhani)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/plugin-broke-my-installation/#post-4967575)
 * Hi can you elaborate the specifics of error? Did you try to reinstall the plugin?
   Are you still receiving the error?
 *  [aniketsarthi](https://wordpress.org/support/users/aniketsarthi/)
 * (@aniketsarthi)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-broke-my-installation/#post-4967622)
 * Tried to activate this plugin and immediately got a fatal error to an undefined
   function in my backend
    Fatal error: Call to undefined function Nette\Utils\mb_strtoupper()
   in /wp-content/plugins/simple-subscribe/libs/Nette/Nette.min.php on line 7191
 * I am reinstall plugin but cant process
 *  Plugin Author [tanaylakhani](https://wordpress.org/support/users/tanaylakhani/)
 * (@tanaylakhani)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-broke-my-installation/#post-4967623)
 * try this link:
 * [https://wordpress.org/support/topic/loaded-the-plugin-and-now-i-cant-access-my-cms](https://wordpress.org/support/topic/loaded-the-plugin-and-now-i-cant-access-my-cms)

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

 The topic ‘Plugin broke my installation’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/simple-subscribe_99d436.svg)
 * [Simple Subscribe](https://wordpress.org/plugins/simple-subscribe/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/simple-subscribe/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/simple-subscribe/)
 * [Active Topics](https://wordpress.org/support/plugin/simple-subscribe/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/simple-subscribe/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/simple-subscribe/reviews/)

 * 3 replies
 * 3 participants
 * Last reply from: [tanaylakhani](https://wordpress.org/support/users/tanaylakhani/)
 * Last activity: [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-broke-my-installation/#post-4967623)
 * Status: not resolved