Title: Warning: array_key_exists() expects parameter 2 to be array…
Last modified: July 12, 2018

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

 *  Resolved [Volker Forster](https://wordpress.org/support/users/volkerforster/)
 * (@volkerforster)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/warning-array_key_exists-expects-parameter-2-to-be-array-3/)
 * Everyone can see this error message on top of the Forum page, but no other page.
   Therefore, I think it is related to the foro plugin:
 * Warning: array_key_exists() expects parameter 2 to be array, boolean given in/
   home/univer73/public_html/universalsolder/wp-content/plugins/wordpress-seo-premium/
   frontend/class-json-ld.php on line 117
 * How to fix this?
 * Thanks
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fwarning-array_key_exists-expects-parameter-2-to-be-array-3%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Author [gVectors Team](https://wordpress.org/support/users/gvectors-team/)
 * (@gvectors-team)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/warning-array_key_exists-expects-parameter-2-to-be-array-3/#post-10489168)
 * This is a conflict with Yoast SEO Pro. Please read this support topic:
    [https://wpforo.com/community/how-to-and-troubleshooting-2/conflict-with-yoast-seo-plugin/](https://wpforo.com/community/how-to-and-troubleshooting-2/conflict-with-yoast-seo-plugin/)

Viewing 1 replies (of 1 total)

The topic ‘Warning: array_key_exists() expects parameter 2 to be array…’ is closed
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## Tags

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

 * 1 reply
 * 2 participants
 * Last reply from: [gVectors Team](https://wordpress.org/support/users/gvectors-team/)
 * Last activity: [7 years, 11 months ago](https://wordpress.org/support/topic/warning-array_key_exists-expects-parameter-2-to-be-array-3/#post-10489168)
 * Status: resolved