Title: Fatal error: Call to undefined function Last modified: January 18, 2017 --- # Fatal error: Call to undefined function * Resolved [derrik85](https://wordpress.org/support/users/derrik85/) * (@derrik85) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/) * Hello everyone, I’m not so familiar with wp but I was updating it to 4.7.1 and now i can’t access it anymore and if i try to log in the wp-admin way it says: * Fatal error: Call to undefined function ot_register_meta_box() in /web/htdocs/ www.ekoteam.it/home/ekoteam/wp-content/themes/elevate/theme-core/ot-meta-boxes. php on line 950 * or if I try to simply go to the website it says: * Fatal error: Call to undefined function ot_get_option() in /web/htdocs/www.ekoteam. it/home/ekoteam/wp-content/themes/elevate/header.php on line 18 * What can I do to fix it and not lose the content of the website? Thank you Viewing 10 replies - 1 through 10 (of 10 total) * Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/) * (@sterndata) * Volunteer Forum Moderator * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8669284) * It seems like a problem with your theme. * To get back into your site, delete the theme and WordPress will fall back to twentyseventeen. Or check for an update to your theme ([https://themeforest.net/item/elevate-responsive-multipurpose-html-template/3350888](https://themeforest.net/item/elevate-responsive-multipurpose-html-template/3350888)) and install the update via FTP. * As you use a commercial theme and need support, please use their official support channel. We feel they are best equipped to support their products. * [https://themeforest.net/item/elevate-responsive-multipurpose-html-template/3350888/support](https://themeforest.net/item/elevate-responsive-multipurpose-html-template/3350888/support) * Thread Starter [derrik85](https://wordpress.org/support/users/derrik85/) * (@derrik85) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8669427) * Thank you for your quick answer, I just emailed them too, but I have another question: if I delete the “elevate” theme because I need to get back online soon, it will completely change the appearance of the website and may mess up things, right? * Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/) * (@sterndata) * Volunteer Forum Moderator * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8669545) * Yes, it will change the appearance of the site, so maybe the first thing to do is to re-download the theme and check the version. You have 1.2.8 on your site. If they have a newer one, upload it to replace the version you have. * Thread Starter [derrik85](https://wordpress.org/support/users/derrik85/) * (@derrik85) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8669657) * They actually say that it is an HTML template, not a wordpress theme. I’m not sure if it’s the correct “elevate” theme but it’s the only one I could find. * Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/) * (@sterndata) * Volunteer Forum Moderator * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8669783) * you’re right… maybe this? * [http://demo.appfinite.net/elevate/](http://demo.appfinite.net/elevate/) * Thread Starter [derrik85](https://wordpress.org/support/users/derrik85/) * (@derrik85) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8669820) * I’m sorry but it’s not that one cause it should be together with the “Genesis Framework” and I don’t have that * Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/) * (@sterndata) * Volunteer Forum Moderator * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8669877) * When I look at your style.css, I can see the author’s link, but it seems to be dead now. * [http://www.ekoteam.it/wp-content/themes/elevate/style.css](http://www.ekoteam.it/wp-content/themes/elevate/style.css) * Time to get another theme, perhaps. * Thread Starter [derrik85](https://wordpress.org/support/users/derrik85/) * (@derrik85) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8669891) * Oh ok, well thank you anyway you were really helpful, at least now I know what I have to do! Thank you again! * Thread Starter [derrik85](https://wordpress.org/support/users/derrik85/) * (@derrik85) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8672689) * Sorry but I have one more question: can i switch between themes via ftp? Like without deleting the Elevate theme, but just switching to twentywhatever? Because I contacted the author of ELevate and maybe he can send me a version of it * Moderator [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/) * (@sterndata) * Volunteer Forum Moderator * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8673941) * See this to change themes via the database: * [http://www.inmotionhosting.com/support/edu/wordpress/change-theme-in-db](http://www.inmotionhosting.com/support/edu/wordpress/change-theme-in-db) * or * via FTP, rename “elevate” to “elevate.old” and that should force WP to fall back to a default theme. Viewing 10 replies - 1 through 10 (of 10 total) The topic ‘Fatal error: Call to undefined function’ is closed to new replies. ## Tags * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 10 replies * 2 participants * Last reply from: [Steven Stern (sterndata)](https://wordpress.org/support/users/sterndata/) * Last activity: [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-88/#post-8673941) * Status: resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics