Hello I got this e-mail earlier today, how do we resolve the error?

ordPress <[email protected]>
Aug. 9 2021 20:38 (12 hours ago)
for me
Hello.
Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your website and notifies you with this automatic email.
In this case, WordPress detected an error with your theme: Arkhitekton.
First, visit their website (https://www.moamstudio.com/) and check for any visible problems. Then visit the page where the error was found (https://www.moamstudio.com/wp-admin/widgets.php?legacy-widget-preview%5BidBase%5D=text&legacy-widget-preview%5Binstance%5D % 5Bencoded% 5D = YTo0OntzOjU6InRpdGxlIjtzOjg6IkFib3V0IFVzIjtzOjQ6InRleHQiO3M6MTg4OiJBcmtoaXRla3RvbiBpcyBhIG1vZGVybiB0aGVtZSB3aGljaCBjYW4gYmUgdXNlZCBmb3IgYXJjaGl0ZWN0dXJlLCBpbnRlcmlvciBkZXNpZ24sIGFyY2hpdGVjdHMgYW5kIG11Y2ggbW9yZS4gVGhlIGF0dGVudGlvbiB0byBkZXRhaWxzIGluIEFya2hpdGVrdG9uIG1ha2VzIGl0IHZlcnkgcG93ZXJmdWwgYW5kIGVhc3kgdG8gdXNlLiI7czo2OiJmaWx0ZXIiO2I6MTtzOjY6InZpc3VhbCI7YjoxO30% 3D & legacy-widget-preview% 5Binstance% 5D% 5Bhash% 5D = 3b16434cd824408aecb1d871f1237f49 & legacy-widget-preview% 5Binstance% 5D% 5Braw% 5D% 5Btitle% 5D = About% 20us & legacy-widget-preview% 5Binstance% 5D %5Braw%5D%5Btext%5D=Arkhitekton%20is%20a%20modern%20theme%20which%20can%20be%20used%20for%20architecture%2C%20interior%20design%2C%20architects%20and%20much%20more.%20The% 20attention%20to%20details%20in%20Arkhitekton%20makes%20it%20very%20powerful%20and% 20easy%20to%20use.&legacy-widget-preview%5Binstance%5D%5Braw%5D%5Bfilter%5D=true&legacy-widget-preview%5Binstance%5D%5Braw%5D%5Bvisual%5D=true&legacy-widget-preview%5 5D%5Btitle%5D=About%20Us&legacy-widget-preview%5Binstance%5D%5Bis_widget_customizer_js_value%5D=true) and check for any visible issues.
Please contact the support team where you host your website for help investigating this issue.
If your website appears to be broken and you can't access your control panel as usual, WordPress now has a special "restore mode". This allows you to securely log in to your dashboard and investigate further.
Detalhes do erro
================
Um erro do tipo E_ERROR foi causado na linha 226 do arquivo /home1/moamst63/public_html/wp-content/themes/arkhitekton/includes/functions/neuron-functions.php. Mensagem de erro: Uncaught Error: Call to undefined function get_field() in /home1/moamst63/public_html/wp-content/themes/arkhitekton/includes/functions/neuron-functions.php:226
Stack trace:
#0 /home1/moamst63/public_html/wp-content/themes/arkhitekton/functions.php(410): arkhitekton_inherit_option('general_body_of...', 'body_offset', '2')
#1 /home1/moamst63/public_html/wp-content/themes/arkhitekton/functions.php(182): arkhitekton_body_offset()
#2 /home1/moamst63/public_html/wp-includes/class-wp-hook.php(303): arkhitekton_external_css('')
#3 /home1/moamst63/public_html/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array)
#4 /home1/moamst63/public_html/wp-includes/plugin.php(470): WP_Hook->do_action(Array)
#5 /home1/moamst63/public_html/wp-includes/script-loader.php(2083): do_action('wp_enqueue_scri...')
#6 /home1/moamst63/public_html/wp-includes/class-wp-hook.php(303): wp_enqueue_scripts('')
#7 /home1/moamst63/public_html/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array)
#8 /home1/moamst