Hi,
I get a fatal error after plugin activation:
Fatal error: Uncaught Error: Call to undefined function AcfEngine\Core\acf_add_options_sub_page() in /var/www/vhosts/xn--rderkids-n4a.de/staging.xn--rderkids-n4a.de/wp-content/plugins/acf-engine/src/AdminMenu.php:14 Stack trace: #0 /var/www/vhosts/xn--rderkids-n4a.de/staging.xn--rderkids-n4a.de/wp-includes/class-wp-hook.php(303): AcfEngine\Core\AdminMenu->AcfEngine\Core\{closure}() #1 /var/www/vhosts/xn--rderkids-n4a.de/staging.xn--rderkids-n4a.de/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters() #2 /var/www/vhosts/xn--rderkids-n4a.de/staging.xn--rderkids-n4a.de/wp-includes/plugin.php(470): WP_Hook->do_action() #3 /var/www/vhosts/xn--rderkids-n4a.de/staging.xn--rderkids-n4a.de/wp-content/plugins/advanced-custom-fields/acf.php(326): do_action() #4 /var/www/vhosts/xn--rderkids-n4a.de/staging.xn--rderkids-n4a.de/wp-includes/class-wp-hook.php(303): ACF->init() #5 /var/www/vhosts/xn--rderkids-n4a.de/staging.xn--rderkids-n4a.de/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters() #6 /var/www/vhosts/xn--rderki in /var/www/vhosts/xn--rderkids-n4a.de/staging.xn--rderkids-n4a.de/wp-content/plugins/acf-engine/src/AdminMenu.php on line 14