Title: Fatal error: Uncaught Error Last modified: December 10, 2018 --- # Fatal error: Uncaught Error * [issami1](https://wordpress.org/support/users/issami1/) * (@issami1) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/) * Hello, * After having updated the theme, my website front-end is showing this error message: * Fatal error: Uncaught Error: Call to undefined function generate_do_element_classes() in /home/adoptpro/public_html/adoptprof.be/wp-content/themes/generatepress_child/ index.php:20 Stack trace: #0 /home/adoptpro/public_html/adoptprof.be/wp-includes/ template-loader.php(74): include() #1 /home/adoptpro/public_html/adoptprof.be/ wp-blog-header.php(19): require_once(‘/home/adoptpro/…’) #2 /home/adoptpro/public_html/ adoptprof.be/index.php(17): require(‘/home/adoptpro/…’) #3 {main} thrown in / home/adoptpro/public_html/adoptprof.be/wp-content/themes/generatepress_child/ index.php on line 20 * Could you help me to resolve that please? * Thank you in advance! * Regards, Issam Viewing 12 replies - 1 through 12 (of 12 total) * Theme Author [Tom](https://wordpress.org/support/users/edge22/) * (@edge22) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10966691) * Hi there, * `generate_do_element_classes()` is a new function in GP 2.2. * If your child theme is using it, you need to make sure your parent theme is running at least 2.2. * Let me know if that helps or not 🙂 * Thread Starter [issami1](https://wordpress.org/support/users/issami1/) * (@issami1) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10967645) * Thank you for your answer. * I did check the parent theme version installed, and indeed it is 2.2.1 * Thank you for help! * Theme Author [Tom](https://wordpress.org/support/users/edge22/) * (@edge22) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10970072) * In that case, the function should be defined: [https://github.com/tomusborne/generatepress/blob/2.2.1/inc/markup.php#L20](https://github.com/tomusborne/generatepress/blob/2.2.1/inc/markup.php#L20) * Perhaps your server has caching which is still serving the old files? * Thread Starter [issami1](https://wordpress.org/support/users/issami1/) * (@issami1) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10970888) * I renamed the child theme and re installed it through the zip file. Then I copied functions.php and styles.css from the last child version and things seem to be right. * Could this be a solution? * Thank you! * Theme Author [Tom](https://wordpress.org/support/users/edge22/) * (@edge22) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10971580) * As long as the parent theme is installed correctly, you should be good to go. * Make sure your child theme `functions.php` file only has your custom functions in it. It shouldn’t have anything from the parent theme `functions.php` file. * Thread Starter [issami1](https://wordpress.org/support/users/issami1/) * (@issami1) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10972032) * Thank you. Yes, my child theme functions.php file contains only the custom functions. * I have one last question about the child theme please, is it possible that it doesn’t contain any index.php file? * Thank you in advance! * Theme Author [Tom](https://wordpress.org/support/users/edge22/) * (@edge22) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10976572) * Yes, it doesn’t have to. You would only need an `index.php` file if you need to overwrite the one that exists in the parent theme. * Thread Starter [issami1](https://wordpress.org/support/users/issami1/) * (@issami1) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10977318) * Thank you so much for your support! * Best regards, Issam * Theme Author [Tom](https://wordpress.org/support/users/edge22/) * (@edge22) * [7 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-10982083) * No problem! 🙂 * Thread Starter [issami1](https://wordpress.org/support/users/issami1/) * (@issami1) * [7 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-11160783) * Hello Tom, I hope you’re doing well. Is it possible to delete this thread from your forum please because it is appearing on the first searching page on Google. * Thank you for your comprehension! Regards. * Theme Author [Tom](https://wordpress.org/support/users/edge22/) * (@edge22) * [7 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-11161113) * Hi there, * Unfortunately, I don’t have control over topics here on WordPress.org. You could try asking the moderators, but I don’t believe they delete topics for that reason. * Thread Starter [issami1](https://wordpress.org/support/users/issami1/) * (@issami1) * [7 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-11162836) * Okay I will try with them. Thank you Viewing 12 replies - 1 through 12 (of 12 total) The topic ‘Fatal error: Uncaught Error’ is closed to new replies. * ![](https://i0.wp.com/themes.svn.wordpress.org/generatepress/3.6.1/screenshot. png) * GeneratePress * [Support Threads](https://wordpress.org/support/theme/generatepress/) * [Active Topics](https://wordpress.org/support/theme/generatepress/active/) * [Unresolved Topics](https://wordpress.org/support/theme/generatepress/unresolved/) * [Reviews](https://wordpress.org/support/theme/generatepress/reviews/) * 12 replies * 2 participants * Last reply from: [issami1](https://wordpress.org/support/users/issami1/) * Last activity: [7 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-19/#post-11162836) * Status: not a support question