Title: Fatal error
Last modified: August 21, 2016

---

# Fatal error

 *  [Ingrid D.](https://wordpress.org/support/users/ingrid-d/)
 * (@ingrid-d)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-1166/)
 * I tried to combine the theme of Sequel with the plugins of twenty fourteen. When
   I tried to work on the slider, I got this message: Fatal error: Call to undefined
   function wp_is_mobile() in /home/roadtr11/public_html/wp-content/plugins/fourteen-
   extended/inc/fourteenxt-customizer.php on line 633
 * I don’t have any access anymore to my website: [http://road-tripping-europe.com](http://road-tripping-europe.com).
   Please help me!
 * [https://wordpress.org/plugins/styles-twentyfourteen/](https://wordpress.org/plugins/styles-twentyfourteen/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Brian Harris](https://wordpress.org/support/users/zgani/)
 * (@zgani)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-1166/#post-4837447)
 * Hello Ingrid,
 * The issue is with Fourteen Extended – see this thread: [http://wordpress.org/support/topic/fatal-error-1166?replies=1](http://wordpress.org/support/topic/fatal-error-1166?replies=1)
 * If you’d like to drop me a line here: [http://wpdefault.com/contact-me/](http://wpdefault.com/contact-me/)
   I’ll be more than happy to assist resolve the issue.
 * Regards,
    Zulf

Viewing 1 replies (of 1 total)

The topic ‘Fatal error’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/styles-twentyfourteen.svg)
 * [Styles: TwentyFourteen](https://wordpress.org/plugins/styles-twentyfourteen/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/styles-twentyfourteen/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/styles-twentyfourteen/)
 * [Active Topics](https://wordpress.org/support/plugin/styles-twentyfourteen/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/styles-twentyfourteen/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/styles-twentyfourteen/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Brian Harris](https://wordpress.org/support/users/zgani/)
 * Last activity: [12 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-1166/#post-4837447)
 * Status: not resolved