Title: Undefined array key
Last modified: July 2, 2025

---

# Undefined array key

 *  [matke1984](https://wordpress.org/support/users/matke1984/)
 * (@matke1984)
 * [10 months, 4 weeks ago](https://wordpress.org/support/topic/undefined-array-key-63/)
 * Warning: Undefined array key “_custom_css_f_ele_css_tablet” in C:\wamp64\www\
   xxxxx\wp-content\plugins\custom-css-for-elementor\inc\hook-action.php on line
   233
   Warning: Undefined array key “_custom_css_f_ele_css_mobile” in C:\wamp64\
   www\xxxxx\wp-content\plugins\custom-css-for-elementor\inc\hook-action.php on 
   line 234
 * It appears sometimes without any particular rule. I haven’t been able to determine
   when it appears. But it’s definitely an irritating problem that needs to be solved.
   Thanks in advance.

The topic ‘Undefined array key’ is closed to new replies.

 * ![](https://ps.w.org/custom-css-for-elementor/assets/icon-256x256.png?rev=2618830)
 * [Custom CSS for Elementor](https://wordpress.org/plugins/custom-css-for-elementor/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/custom-css-for-elementor/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/custom-css-for-elementor/)
 * [Active Topics](https://wordpress.org/support/plugin/custom-css-for-elementor/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/custom-css-for-elementor/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/custom-css-for-elementor/reviews/)

 * 0 replies
 * 1 participant
 * Last reply from: [matke1984](https://wordpress.org/support/users/matke1984/)
 * Last activity: [10 months, 4 weeks ago](https://wordpress.org/support/topic/undefined-array-key-63/)
 * Status: not resolved