Title: Warning: Undefined array key “post_type”
Last modified: February 8, 2023

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# Warning: Undefined array key “post_type”

 *  [David Roušar](https://wordpress.org/support/users/ddawe93/)
 * (@ddawe93)
 * [3 years, 3 months ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/)
 * Hello,
   there is a warning message when I use your plugin with the latest WordPress
   and PHP 8.0 / 8.1. With PHP 7.4 no warning appears. Could this be checked and
   fixed?Thanks a lot!

Viewing 8 replies - 1 through 8 (of 8 total)

 *  Plugin Author [Rico Macchi](https://wordpress.org/support/users/rico-macchi/)
 * (@rico-macchi)
 * [3 years, 3 months ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16456119)
 * Hello,
 * I am not able to replicate the error using PHP 8.0 /8.1, any additional information
   would be appreciated.
 * Thank you
 *  Thread Starter [David Roušar](https://wordpress.org/support/users/ddawe93/)
 * (@ddawe93)
 * [3 years, 3 months ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16463867)
 * Hello,
   sure. Please check my server configuration and the warning message here
   [https://drive.google.com/drive/folders/1k6bG2NaLXVACyYComFpjaCtgcLmoCaYe](https://drive.google.com/drive/folders/1k6bG2NaLXVACyYComFpjaCtgcLmoCaYe).
   This message appears when I go to wp-admin. Usually it is on top, but in some
   cases it also appeared in the middle of some configurations.
 *  Plugin Author [Rico Macchi](https://wordpress.org/support/users/rico-macchi/)
 * (@rico-macchi)
 * [3 years, 3 months ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16467294)
 * Hello,
 * I am still not able to replicate the error and I am going to need more information,
   theme, plugins etc.
 * could you contact me via the Links Page website.
 * Thank you
 *  [Roland](https://wordpress.org/support/users/bl4d30r/)
 * (@bl4d30r)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16625208)
 * Hello
 * same here:
 * /wp-content/plugins/wp-links-page/wp-links-page-free.php on line 303 Warning:
   Undefined array key “post_type” in httpdocs/wp-content/plugins/wp-links-page/
   wp-links-page-free.php on line 303
 *  Plugin Author [Rico Macchi](https://wordpress.org/support/users/rico-macchi/)
 * (@rico-macchi)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16625438)
 * Hello Roland,
 * Do you have NextGen Gallery plugin installed on your site?
 *  [Roland](https://wordpress.org/support/users/bl4d30r/)
 * (@bl4d30r)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16625471)
 * Yep, indeed!
 *  Plugin Author [Rico Macchi](https://wordpress.org/support/users/rico-macchi/)
 * (@rico-macchi)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16625514)
 * I will upload a fix within 24 hours, thank you for reporting this issue.
 * If you need the fix sooner, just email me from plugins website.
    -  This reply was modified 3 years, 1 month ago by [Rico Macchi](https://wordpress.org/support/users/rico-macchi/).
 *  [Roland](https://wordpress.org/support/users/bl4d30r/)
 * (@bl4d30r)
 * [3 years, 1 month ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16625524)
 * Thanks for the great support!

Viewing 8 replies - 1 through 8 (of 8 total)

The topic ‘Warning: Undefined array key “post_type”’ is closed to new replies.

 * ![](https://ps.w.org/wp-links-page/assets/icon-256x256.jpg?rev=1826233)
 * [WP Links Page](https://wordpress.org/plugins/wp-links-page/)
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 * 8 replies
 * 3 participants
 * Last reply from: [Roland](https://wordpress.org/support/users/bl4d30r/)
 * Last activity: [3 years, 1 month ago](https://wordpress.org/support/topic/warning-undefined-array-key-post_type/#post-16625524)
 * Status: not resolved