Title: Plugin error
Last modified: January 20, 2021

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# Plugin error

 *  Resolved [iimark](https://wordpress.org/support/users/iimark/)
 * (@iimark)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-166/)
 * In browser console there are two 500 errors (admin-ajax.php) related to the Facebook
   Pixel plugin, which need to be investigated/fixed. Can you check why it can´t
   make connections?
 * Causing tons of issues related to Facebook for WooCommerce integration with Facebook,
   such as
 * Server Sending Invalid Match Key Parameters for AddToCart Event
 * Server Sending Invalid Match Key Parameters for ViewCategory Event
 * Server Sending Invalid Match Key Parameters for ViewContent Event
 * AddToCart Event Missing Some Deduplication Parameters
 * InitiateCheckout Event Missing Some Deduplication Parameters
 * Same Event ID Received for Many Event Instances
 * Low quality event data sources
 * and Test Sever function not working on Pixelyoursite plugin also,
 * Ads delivery drop.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fplugin-error-166%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  [crazywickedawesome](https://wordpress.org/support/users/crazywickedawesome/)
 * (@crazywickedawesome)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-166/#post-13937637)
 * Hi Thanks for reaching out!
 * I’m not seeing any 500 errors in the browser console when I visit your site.
 * Can you please provide a screenshot of exactly what you see in your browser console?
 * I also see that the Facebook script seems to be loading properly when I visit
   the site so it appears to be working as expected.
 * Looking forward to hearing from you!
 *  [AJ a11n](https://wordpress.org/support/users/amandasjackson/)
 * (@amandasjackson)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-166/#post-13988012)
 * We haven’t heard back from you in a while, so I’m going to mark this as resolved–
   if you have any further questions, you can start a new thread.

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

The topic ‘Plugin error’ is closed to new replies.

 * ![](https://ps.w.org/facebook-for-woocommerce/assets/icon.svg?rev=3469606)
 * [Meta for WooCommerce](https://wordpress.org/plugins/facebook-for-woocommerce/)
 * [Support Threads](https://wordpress.org/support/plugin/facebook-for-woocommerce/)
 * [Active Topics](https://wordpress.org/support/plugin/facebook-for-woocommerce/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/facebook-for-woocommerce/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/facebook-for-woocommerce/reviews/)

## Tags

 * [500 errors](https://wordpress.org/support/topic-tag/500-errors/)
 * [admin-ajax.php](https://wordpress.org/support/topic-tag/admin-ajax-php/)
 * [api](https://wordpress.org/support/topic-tag/api/)

 * 2 replies
 * 3 participants
 * Last reply from: [AJ a11n](https://wordpress.org/support/users/amandasjackson/)
 * Last activity: [5 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-166/#post-13988012)
 * Status: resolved