Problem with PHP 8.0

Today I have updated 5 Enfold sites from PHP 7.4 to PHP 8.0 without any problems. However, 1 website caused a problem (www.nataliewalters.nl) after updating to PHP 8.0 and I was not able to login at WordPress anymore. I got these errors:

WordPress versie 6.0.1
Actief thema: Enfold Child (versie 1.0)
Huidige plugin: (versie )
PHP versie 8.0.20

Foutdetails
===========
Een fout van het type E_ERROR werd veroorzaakt op regelnummer 34 van het bestand /home/nataliefoto/domains/nataliewalters.nl/public_html/wp-content/themes/enfold-child/functions.php. Foutmelding: Uncaught Error: Undefined constant “‘after_setup_theme’” in /home/nataliefoto/domains/nataliewalters.nl/public_html/wp-content/themes/enfold-child/functions.php:34
Stack trace:
#0 /home/nataliefoto/domains/nataliewalters.nl/public_html/wp-settings.php(566): include()
#1 /home/nataliefoto/domains/nataliewalters.nl/public_html/wp-config.php(95): require_once(‘/home/nataliefo…’)
#2 /home/nataliefoto/domains/nataliewalters.nl/public_html/wp-load.php(50): require_once(‘/home/nataliefo…’)
#3 /home/nataliefoto/domains/nataliewalters.nl/public_html/wp-login.php(12): require(‘/home/nataliefo…’)
#4 {main}
thrown

I use Enfold Child themes on all my Enfold sites. I have set the PHP version back to 7.4 now and that solved the issue, however I would like to upgrade to 8.0 of course. So what can be the problem here?

This is my functions.php file:

<?php

/*
* Add your own functions here. You can also copy some of the theme functions into this file. 
* WordPress will use those functions instead of the original functions then.
*/

function wpcodex_hide_email_shortcode( $atts , $content = null ) {
	if ( ! is_email( $content ) ) {
		return;
	}

	$content = antispambot( $content );

	$email_link = sprintf( 'mailto:%s', $content );

	return sprintf( '<a href="%s">%s</a>', esc_url( $email_link, array( 'mailto' ) ), esc_html( $content ) );
}
add_shortcode( 'email', 'wpcodex_hide_email_shortcode' );

function ava_image_sizes() {
remove_image_size(‘masonry’);
remove_image_size(‘magazine’);
remove_image_size(‘widget’);
remove_image_size(‘featured’);
remove_image_size(‘featured_large’);
remove_image_size(‘extra_large’);
remove_image_size(‘portfolio_small’);
remove_image_size(‘gallery’);
remove_image_size(‘entry_with_sidebar’);
remove_image_size(‘entry_without_sidebar’);
}
add_action( ‘after_setup_theme’, ‘ava_image_sizes’, 11 );

Thank you for your help!

Best Wishes,
Alwin

• This topic was modified 1 year, 12 months ago by Alwin.
• This topic was modified 1 year, 11 months ago by Rikard.