Title: Plugin breaks Customizr
Last modified: April 2, 2019

---

# Plugin breaks Customizr

 *  Resolved [tappetyclick](https://wordpress.org/support/users/tappetyclick/)
 * (@tappetyclick)
 * [7 years, 2 months ago](https://wordpress.org/support/topic/plugin-breaks-customizr/)
 * When I have this plugin enabled I cannot access WordPress Customizr I just get
   a weird screen (see link for screen grab)
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fplugin-breaks-customizr%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Thread Starter [tappetyclick](https://wordpress.org/support/users/tappetyclick/)
 * (@tappetyclick)
 * [7 years, 2 months ago](https://wordpress.org/support/topic/plugin-breaks-customizr/#post-11382482)
 * I found out this was because the Pardot plugin has a dependency on the PHP-XML
   module which it doesn’t test for but just fails silently.
 *  Plugin Author [Cliff Seal](https://wordpress.org/support/users/cliffseal/)
 * (@cliffseal)
 * [7 years, 2 months ago](https://wordpress.org/support/topic/plugin-breaks-customizr/#post-11394000)
 * That’s wild, [@tappetyclick](https://wordpress.org/support/users/tappetyclick/).
   Thank you for reporting.
 * Would you mind passing along the error message you found?
 *  Thread Starter [tappetyclick](https://wordpress.org/support/users/tappetyclick/)
 * (@tappetyclick)
 * [7 years, 1 month ago](https://wordpress.org/support/topic/plugin-breaks-customizr/#post-11407495)
 * Hi Cliff
 * I just see a weird screen [https://pasteboard.co/I8fzGdK.png](https://pasteboard.co/I8fzGdK.png)
   no error message
 *  Plugin Author [Cliff Seal](https://wordpress.org/support/users/cliffseal/)
 * (@cliffseal)
 * [7 years, 1 month ago](https://wordpress.org/support/topic/plugin-breaks-customizr/#post-11414786)
 * Sorry, let me clarify: how did you know it was related to the PHP-XML module?
 *  [Cory Hughart](https://wordpress.org/support/users/cr0ybot/)
 * (@cr0ybot)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/plugin-breaks-customizr/#post-11726988)
 * I’m having the same issue, here is the PHP error output:
 *     ```
       [12-Jul-2019 18:12:11 UTC] PHP Fatal error:  Uncaught Error: Maximum function nesting level of '256' reached, aborting! in /Users/me/example.com/htdocs/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php:92
       Stack trace:
       #0 /Users/me/example.com/htdocs/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php(92): ArrayIterator->__construct(Array)
       #1 /Users/me/example.com/htdocs/wp-includes/Requests/Cookie.php(229): Requests_Utility_CaseInsensitiveDictionary->getIterator()
       #2 /Users/me/example.com/htdocs/wp-includes/Requests/Cookie.php(84): Requests_Cookie->normalize()
       #3 /Users/me/example.com/htdocs/wp-includes/Requests/Cookie.php(423): Requests_Cookie->__construct('pardot', 'f62g94182jrlq23...', Object(Requests_Utility_CaseInsensitiveDictionary), Array, NULL)
       #4 /Users/me/example.com/htdocs/wp-includes/Requests/Cookie.php(442): Requests_Cookie::parse('pardot=f62g9418...', 'pardot', NULL)
       #5 /Users/me/example.com/htdocs/wp-inclu in /Users/me/example.com/htdocs/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 92
       ```
   
 * For me clicking on the link to open the Customizer just hangs/times out.
 *  Plugin Author [Cliff Seal](https://wordpress.org/support/users/cliffseal/)
 * (@cliffseal)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/plugin-breaks-customizr/#post-11727235)
 * Thanks, [@cr0ybot](https://wordpress.org/support/users/cr0ybot/)! So, when you
   disable the Pardot plugin, this issue goes away?

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Plugin breaks Customizr’ is closed to new replies.

 * ![](https://ps.w.org/pardot/assets/icon-256x256.png?rev=2995205)
 * [Account Engagement](https://wordpress.org/plugins/pardot/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/pardot/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/pardot/)
 * [Active Topics](https://wordpress.org/support/plugin/pardot/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/pardot/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/pardot/reviews/)

 * 6 replies
 * 3 participants
 * Last reply from: [Cliff Seal](https://wordpress.org/support/users/cliffseal/)
 * Last activity: [6 years, 11 months ago](https://wordpress.org/support/topic/plugin-breaks-customizr/#post-11727235)
 * Status: resolved