Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class "BiqSF\ACF" not found in /var/www/biq-shop.de/wp-includes/class-wp-hook.php:324
Stack trace:
#0 /var/www/biq-shop.de/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#1 /var/www/biq-shop.de/wp-includes/plugin.php(517): WP_Hook->do_action()
#2 /var/www/biq-shop.de/wp-content/plugins/advanced-custom-fields-pro/acf.php(424): do_action()
#3 /var/www/biq-shop.de/wp-includes/class-wp-hook.php(324): ACF->init()
#4 /var/www/biq-shop.de/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#5 /var/www/biq-shop.de/wp-includes/plugin.php(517): WP_Hook->do_action()
#6 /var/www/biq-shop.de/wp-settings.php(704): do_action()
#7 /var/www/biq-shop.de/wp-config.php(100): require_once('...')
#8 /var/www/biq-shop.de/wp-load.php(50): require_once('...')
#9 /var/www/biq-shop.de/wp-blog-header.php(13): require_once('...')
#10 /var/www/biq-shop.de/index.php(17): require('...')
#11 {main}
thrown in /var/www/biq-shop.de/wp-includes/class-wp-hook.php on line 324