Title: Plugin Conflict
Last modified: February 23, 2021

---

# Plugin Conflict

 *  [Kevin Brent](https://wordpress.org/support/users/kevin-brent/)
 * (@kevin-brent)
 * [5 years, 3 months ago](https://wordpress.org/support/topic/plugin-conflict-319/)
 * Hello,
 * We recently updated your plugin on our clients website to version 1.2.16. We 
   also updated the AMP plugin to version 2.0.10. [https://wordpress.org/plugins/amp/](https://wordpress.org/plugins/amp/)
 * When updating plugins in WP Admin and logging in/out. We are getting a fatal 
   PHP error. Call to undefined function.
 * The error is related to `idn_to_utf8()`. Your plugin is registering this function
   without namespace.
 * The Amp plugin is calling this function if it exists.
 * The issue occurs when AMP calls the function `idn_to_utf8()`, your plugin is 
   calling namespace methods that are not available to the Amp plugin inside this
   function.
 * I was able to manually update your plugin by prefixing `idn_to_utf8()` with `
   AC_idn_to_utf8()`. This appears to have fixed the issue. However, our client 
   would prefer not to need to manually fix this every time we do plugin updates.
 * Please let me know if/when you can address this issue.

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

 * ![](https://ps.w.org/activecampaign-for-woocommerce/assets/icon-256x256.png?rev
   =1925389)
 * [ActiveCampaign for WooCommerce](https://wordpress.org/plugins/activecampaign-for-woocommerce/)
 * [Support Threads](https://wordpress.org/support/plugin/activecampaign-for-woocommerce/)
 * [Active Topics](https://wordpress.org/support/plugin/activecampaign-for-woocommerce/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/activecampaign-for-woocommerce/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/activecampaign-for-woocommerce/reviews/)

 * 0 replies
 * 1 participant
 * Last reply from: [Kevin Brent](https://wordpress.org/support/users/kevin-brent/)
 * Last activity: [5 years, 3 months ago](https://wordpress.org/support/topic/plugin-conflict-319/)
 * Status: not resolved