Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, null given in /var/www/html/wp-content/plugins/facebook-for-woocommerce/includes/Events/AAMSettings.php:76
Stack trace:
#0 /var/www/html/wp-content/plugins/facebook-for-woocommerce/includes/Events/AAMSettings.php(76): array_key_exists('errorMessage', NULL)
#1 /var/www/html/wp-content/plugins/facebook-for-woocommerce/facebook-commerce.php(452): WooCommerce\Facebook\Events\AAMSettings::build_from_pixel_id('317978952229119...')
#2 /var/www/html/wp-content/plugins/facebook-for-woocommerce/facebook-commerce.php(343): WC_Facebookcommerce_Integration->load_aam_settings_of_pixel()
#3 /var/www/html/wp-content/plugins/facebook-for-woocommerce/class-wc-facebookcommerce.php(603): WC_Facebookcommerce_Integration->__construct(Object(WC_Facebookcommerce))
#4 /var/www/html/wp-includes/class-wp-hook.php(308): WC_Facebookcommerce->get_integration('')
#5 /var/www/html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)
#6 /var/www/html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#7 /var/www/html/wp-settings.php(623): do_action('init')
#8 /var/www/html/wp-config.php(133): require_once('/var/www/html/w...')
#9 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...')
#10 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...')
#11 /var/www/html/index.php(17): require('/var/www/html/w...')
#12 {main}
  thrown in /var/www/html/wp-content/plugins/facebook-for-woocommerce/includes/Events/AAMSettings.php on line 76