Title: Fatal error Call to undefined function
Last modified: March 16, 2018

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# Fatal error Call to undefined function

 *  Resolved [tipsntrick](https://wordpress.org/support/users/tipsntrick/)
 * (@tipsntrick)
 * [8 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-101/)
 * Hi,
    I am getting blank page with error when i am trying to disable a plug-in
   i just blank page. After switching Wp-debug i am getting below error
 * `Fatal error: Uncaught Error: Call to undefined function is_shop() in /home/wqvdy1io64he/
   public_html/wp-content/themes/vitrine/functions.php:46 Stack trace: #0 /home/
   wqvdy1io64he/public_html/wp-includes/class-wp-hook.php(286): short_woocommerce_product_titles_chars('
   FAQs', 12195) #1 /home/wqvdy1io64he/public_html/wp-includes/plugin.php(203): 
   WP_Hook->apply_filters('FAQs', Array) #2 /home/wqvdy1io64he/public_html/wp-includes/
   post-template.php(158): apply_filters('the_title', 'FAQs', 12195) #3 /home/wqvdy1io64he/
   public_html/wp-content/plugins/wr-megamenu/includes/helpers/type.php(680): get_the_title()#
   4 /home/wqvdy1io64he/public_html/wp-content/plugins/wr-megamenu/includes/helpers/
   type.php(698): WR_Megamenu_Helpers_Type::get_single_by_post_types() #5 /home/
   wqvdy1io64he/public_html/wp-content/plugins/wr-megamenu/shortcodes/image/megamenu-
   image.php(162): WR_Megamenu_Helpers_Type::get_single_item_button_bar('link_type',
   Array) #6 /home/wqvdy1io64he/public_html/wp-content/plugins/wr-megamenu/includes/
   shortcode/element.php(25): in /home/wqvdy1io64he/public_html/wp-content/themes/
   vitrine/functions.php on line 46`
    -  This topic was modified 8 years, 2 months ago by [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/).
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-call-to-undefined-function-101%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/)
 * (@sterndata)
 * Volunteer Forum Moderator
 * [8 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-101/#post-10016242)
 * What plugin did you disable to cause this?
 * As you use a commercial theme/plugin and need support, please use their official
   support channel. We feel they are best equipped to support their products.
 * [https://themeforest.net/item/vitrine-woocommerce-wordpress-theme/19951364/support](https://themeforest.net/item/vitrine-woocommerce-wordpress-theme/19951364/support)
 * **Commercial products are [not supported in these forums](https://make.wordpress.org/support/handbook/forum-welcome/#do-not-post-about-commercial-products).**.

Viewing 1 replies (of 1 total)

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/)
 * Last activity: [8 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-101/#post-10016242)
 * Status: resolved

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