Title: Error message: Warning: array_key_exists() expects parameter 2 to be array…
Last modified: August 31, 2016

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# Error message: Warning: array_key_exists() expects parameter 2 to be array…

 *  Resolved [psiginc](https://wordpress.org/support/users/psiginc/)
 * (@psiginc)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-warning-array_key_exists-expects-parameter-2-to-be-array/)
 * Once the user completes a registration form, on Firefox they receive this error
   message: Warning: array_key_exists() expects parameter 2 to be array, null given
   in /home2/psiginc/public_html/wp-content/plugins/gravity-forms-wysiwyg-ckeditor/
   gf_wysiwyg_ckeditor_plugin.php on line 820
 * The user the mentioned the error message was using Firefox version 38.4.0.
 * All of our wordpress plug ins, add ons and systems are up to date.
 * How do I correct this error? I’ve tried uninstalling and reinstalling the plug
   in.
 * [https://wordpress.org/plugins/gravity-forms-wysiwyg-ckeditor/](https://wordpress.org/plugins/gravity-forms-wysiwyg-ckeditor/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [ovann86](https://wordpress.org/support/users/ovann86/)
 * (@ovann86)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-warning-array_key_exists-expects-parameter-2-to-be-array/#post-7177371)
 * Hey,
 * I don’t have time right now to look at the specifics of that error message, but
   I can say that it seems to be happening for everyone and with no real affect (
   data is submitted fine, page loads for user).
 * The difference is, you’re seeing the error message because you have debug mode
   turned on. Without debug mode turned on there messages are not displayed to users.
 * I will look at the cause of the error, hopefully in the next 24 hours, but I 
   highly suggest you turn off debug mode if it’s a production website (not a test
   website).
 * To turn it off you’ll need access to the WordPress files on your web server, 
   for example using FTP or your websites cpanel. You will need to edit your wp-
   config.php file, changing ‘debug_mode’ to ‘false’.
 * [https://codex.wordpress.org/Debugging_in_WordPress](https://codex.wordpress.org/Debugging_in_WordPress)
 *  [pivotpoint](https://wordpress.org/support/users/pivotpoint/)
 * (@pivotpoint)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-warning-array_key_exists-expects-parameter-2-to-be-array/#post-7177381)
 * Hi Adrian –
 * I’m experiencing the same error (it’s repeated multiple times on the page, above
   the confirmation message), and I do have debug_mode set to false. Do you have
   any other options for a quick fix, just to prevent the error from appearing on
   the page?
 * Thanks.
 *  Plugin Author [ovann86](https://wordpress.org/support/users/ovann86/)
 * (@ovann86)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-warning-array_key_exists-expects-parameter-2-to-be-array/#post-7177412)
 * Hey,
 * I have released version 1.8.1 which uses a different method to check the variable–
   I hope it won’t cause any error messages on submitting like array_key_exists()
   was.
 * Could you update to version 1.8.1 and let me know how it goes?
 *  [pivotpoint](https://wordpress.org/support/users/pivotpoint/)
 * (@pivotpoint)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-warning-array_key_exists-expects-parameter-2-to-be-array/#post-7177431)
 * Thanks for making this fix… I updated the plugin, and the errors went away.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Error message: Warning: array_key_exists() expects parameter 2 to be 
array…’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/gravity-forms-wysiwyg-ckeditor_d3d3d3.
   svg)
 * [CKEditor WYSIWYG for Gravity Forms](https://wordpress.org/plugins/gravity-forms-wysiwyg-ckeditor/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/gravity-forms-wysiwyg-ckeditor/#faq)
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 * 4 replies
 * 3 participants
 * Last reply from: [pivotpoint](https://wordpress.org/support/users/pivotpoint/)
 * Last activity: [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-warning-array_key_exists-expects-parameter-2-to-be-array/#post-7177431)
 * Status: resolved