Title: Critical error when activating the plugin
Last modified: March 31, 2021

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# Critical error when activating the plugin

 *  Resolved [sweetydays](https://wordpress.org/support/users/sweetydays/)
 * (@sweetydays)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/critical-error-when-activating-the-plugin/)
 * Hi,
 * When trying to install and activate this plugin, I got a critical error message
   both on the back-end and front-end. I need to load my last backup in order to
   my site work again.
    What to do ?

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

 *  Plugin Support [Gabriel – a11n](https://wordpress.org/support/users/gabrielfuentes/)
 * (@gabrielfuentes)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/critical-error-when-activating-the-plugin/#post-14262172)
 * Hi there 👋
 * This kind of problem is usually caused by a conflict with your theme or with 
   another plugin.
      The best way to determine this is to:
    - Temporarily switch your theme to [Storefront](https://www.woocommerce.com/storefront/)
    - Disable all plugins
    - Repeat the action that is causing the problem
 * If you’re not seeing the same problem after completing the conflict test, then
   you know the problem was with the plugins and/or theme you deactivated. To figure
   out which plugin is causing the problem, reactivate your other plugins one by
   one, testing after each until you find the one causing conflict. [You can find a more detailed explanation on how to do a conflict test here.](https://docs.woocommerce.com/document/how-to-test-for-conflicts/)
 * **Before you start**
    1. First, please make sure you have a good backup in place of your full site and
       database. Most hosting companies have this included in the subscription, but
       you could also consider using a service like Jetpack. If something goes wrong,
       it’s nice to know that you can restore your site.
    2. Second, I would suggest installing a plugin called Health Check & Troubleshooting.
       This is a plugin developed by the WordPress community and it allows you to disable
       plugins without affecting your current site visitors.
 * I hope that helps!
 *  Plugin Support [Gabriel – a11n](https://wordpress.org/support/users/gabrielfuentes/)
 * (@gabrielfuentes)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/critical-error-when-activating-the-plugin/#post-14290992)
 * We’ve not seen any activity on this thread for a while, so I’m marking this thread
   as resolved.
 * Hopefully, you were able to find a solution to your problem! If you have further
   questions, please feel free to open a new topic.
 * Cheers!

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

The topic ‘Critical error when activating the plugin’ is closed to new replies.

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## Tags

 * [critical error](https://wordpress.org/support/topic-tag/critical-error/)

 * 2 replies
 * 2 participants
 * Last reply from: [Gabriel – a11n](https://wordpress.org/support/users/gabrielfuentes/)
 * Last activity: [5 years, 1 month ago](https://wordpress.org/support/topic/critical-error-when-activating-the-plugin/#post-14290992)
 * Status: resolved