Title: PHP Warning
Last modified: August 5, 2025

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# PHP Warning

 *  Resolved [Bojan Denić](https://wordpress.org/support/users/evilmc/)
 * (@evilmc)
 * [9 months, 3 weeks ago](https://wordpress.org/support/topic/php-warning-542/)
 * `[05-Aug-2025 15:52:18 UTC] PHP Warning: foreach() argument must be of type array
   |object, string given in /home/user/public_html/wp-content/plugins/seo-by-rank-
   math/includes/frontend/paper/class-paper.php on line 526`
 * Can you fix this?

Viewing 1 replies (of 1 total)

 *  Plugin Support [Rank Math Support](https://wordpress.org/support/users/rankmathsupport/)
 * (@rankmathsupport)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-warning-542/#post-18598112)
 * Hello [@evilmc](https://wordpress.org/support/users/evilmc/),
    Thank you for 
   contacting Rank Math support. The warning is related to the Advanced Robots Meta
   settings. The value of the rank_math_advanced_robots meta key seems to be corrupted
   for some posts. Please search for the meta key in the postmeta table of your 
   site’s database and remove the keys that don’t have the value stored as a serialized
   array. You can ask your host to help you if you’re not sure. Let us know how 
   that goes. Looking forward to helping you.

Viewing 1 replies (of 1 total)

The topic ‘PHP Warning’ is closed to new replies.

 * ![](https://ps.w.org/seo-by-rank-math/assets/icon.svg?rev=3438330)
 * [Rank Math SEO – AI SEO Tools to Dominate SEO Rankings](https://wordpress.org/plugins/seo-by-rank-math/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/seo-by-rank-math/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/seo-by-rank-math/)
 * [Active Topics](https://wordpress.org/support/plugin/seo-by-rank-math/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/seo-by-rank-math/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/seo-by-rank-math/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Rank Math Support](https://wordpress.org/support/users/rankmathsupport/)
 * Last activity: [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-warning-542/#post-18598112)
 * Status: resolved