[SOLVED] Fatal error: Uncaught Error: Call to undefined function us_amp() – Zephyr Theme

Andrei Iordache

Andrei Iordache

WordPress Developer

­čÜÇ I Help People Get Found Online | WordPress Development, Core Web Vitals, Security&Maintenance

[SOLVED] Fatal error: Uncaught Error: Call to undefined function us_amp() – Zephyr Theme

 

Today, while I was updating the Zephyr theme for one of my clients from Zephyr 7.10 to Zephyr 7.11, I got this fatal error:

Fatal error
: Uncaught Error: Call to undefined function us_amp() in \wp-content\themes\Zephyr\common\functions\menu.php:104 Stack trace:
#0 \wp-includes\class-wp-walker.php(144): US_Walker_Nav_Menu->start_el('<li id="menu-it...', Object(WP_Post), 0, Object(stdClass))
#1 \wp-includes\class-wp-walker.php(244): Walker->display_element(Object(WP_Post), Array, 0, 0, Array, '<li id="menu-it...')
#2 \wp-includes\nav-menu-template.php(608): Walker->walk(Array, 0, Object(stdClass))
#3 \wp-includes\nav-menu-template.php(228): walk_nav_menu_tree(Array, 0, Object(stdClass))
#4 \wp-content\plugins\us-core\templates\elements\menu.php(80): wp_nav_menu(Object(stdClass))
#5 \wp-content\plugins\us-core\functions\helpers.php(130): include('G:\\XAMPP\\htdocs...')
#6 \wp-content\plugins\us-core\functions\header.php(232): us_load_template('templates/eleme...', Array)
#7 \wp-c in \wp-content\themes\Zephyr\common\functions\menu.php on line 104

There has been a critical error on your website.

Learn more about debugging in …

As you already know, most of the time I backup everything. But, even that, the feeling when you discover any kind of error, after working some hours on a project, is … indescribable.

How to solve this error

Well, to solve this fatal error, it’s as simple as it sounds: Update the UpSolution Core plugin. If it’s not showing as “To be updated” in your WordPress Admin Dashboard, than you must click on “Check again” button, from the “Updates” page.

Don’t forget: Anytime you update something on your website, create a backup before! Beside the fact that you should update your website on a regular basis, even if you don’t update/change content often, do a backup on each new plugin or theme added, or even plugin or theme update.

You never know…

All the best!

Andrei

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15:32 22 Jun 22
Andrei did an amazing job! He helped in a very rushed time and he excelled at everything. Thanks again!
I am grateful and I would to thank Websites Seller for their support in site recovery and site transfer. Websites Seller just saved my business. Thank you!
Wouter GhysensWouter Ghysens
11:52 10 Sep 21
Looking for a Wordpress transfer from site A to site B, I found back Andrei from Wesites Seller on Google.He was very proactive in his approach, came with hundreds of ideas and lifetime experiences from other migrations. He knows the wordpress, the hosting and php database as the back of his pocket.And we worked out this migration very smooth. Together we solved it, and myself and my business are very pleased with his approach.100% recommendation & kudo's from out of Belgium!
Ioachim CiobanuIoachim Ciobanu
18:39 14 Jul 21
Websites Seller built my resume site. Deliverables were quickly completed, and I was asked for my feedback at each stage of development. All feedback I gave was implemented in a short time.Another great thing is that he comes with smart solutions, regarding stuff which I didn't initially think of (site security, Google site speed optimization and so on). Basically, he was great, staying in touch, keeping me updated and paid attention to what was most important for my site.Overall, I am very happy with the work done. I highly recommend this developer!
K CollinsK Collins
09:11 19 May 21
I needed help with website speed - to improve my core web vitals - without compromising the usability of my site. Andrei was extremely responsive, proactive and fast. And more importantly, he increased by website speed. Highly recommend him, and I will be using him going forward on all my projects.
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