Title: Plugin Installation Crashed My Website
Last modified: September 1, 2022

---

# Plugin Installation Crashed My Website

 *  Resolved [emuts193](https://wordpress.org/support/users/emuts193/)
 * (@emuts193)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/plugin-installation-crashed-my-website/)
 * Hi,
 * I was editing my website and noticed that some plugin updates were needed. I 
   starting updating them all and got down to “teachpress” as the last one. After
   waiting 5 minutes I refreshed the page and got the error message: “Fatal error:
   Call to undefined function determine_locale() in /home4/moheimani/public_html/
   reza/lab/wp-content/plugins/teachpress/teachpress.php on line 525”
 * I am now unable to login to my website to try and fix this. What do I do?
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fplugin-installation-crashed-my-website%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Author [winkm89](https://wordpress.org/support/users/winkm89/)
 * (@winkm89)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/plugin-installation-crashed-my-website/#post-15971373)
 * Hi,
    Which version of WordPress have you been used? determine_locale() is a core
   function of WordPress but only available with version 5.0 or higher.
 *  Plugin Author [winkm89](https://wordpress.org/support/users/winkm89/)
 * (@winkm89)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/plugin-installation-crashed-my-website/#post-15971389)
 * A simple fix: just manually remove teachPress from the file system (for example
   with a FTP-Client). This deactivates the plugin and should make it possible to
   load WordPress again. (data in the database are still retained)
 *  Thread Starter [emuts193](https://wordpress.org/support/users/emuts193/)
 * (@emuts193)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/plugin-installation-crashed-my-website/#post-15971550)
 * Thank you. I was able to fix it.

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

The topic ‘Plugin Installation Crashed My Website’ is closed to new replies.

 * ![](https://ps.w.org/teachpress/assets/icon-256x256.png?rev=1110789)
 * [teachPress](https://wordpress.org/plugins/teachpress/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/teachpress/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/teachpress/)
 * [Active Topics](https://wordpress.org/support/plugin/teachpress/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/teachpress/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/teachpress/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [emuts193](https://wordpress.org/support/users/emuts193/)
 * Last activity: [3 years, 9 months ago](https://wordpress.org/support/topic/plugin-installation-crashed-my-website/#post-15971550)
 * Status: resolved