Fatal error: Uncaught Error: Call to undefined function WC() in /customers/5/d/5/francomontanelli.com/httpd.www/wp-content/plugins/mailchimp-for-woocommerce/includes/tracking/class-mailchimp-woocommerce-pixel-tracking.php:368
Stack trace:
#0 /customers/5/d/5/francomontanelli.com/httpd.www/wp-includes/class-wp-hook.php(324): MailChimp_WooCommerce_Pixel_Tracking->hydrate_script_data_from_session(Object(WP))
#1 /customers/5/d/5/francomontanelli.com/httpd.www/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#2 /customers/5/d/5/francomontanelli.com/httpd.www/wp-includes/plugin.php(565): WP_Hook->do_action(Array)
#3 /customers/5/d/5/francomontanelli.com/httpd.www/wp-includes/class-wp.php(835): do_action_ref_array('wp', Array)
#4 /customers/5/d/5/francomontanelli.com/httpd.www/wp-includes/functions.php(1342): WP->main('')
#5 /customers/5/d/5/francomontanelli.com/httpd.www/wp-blog-header.php(16): wp()
#6 /customers/5/d/5/francomontanelli.com/httpd.www/index.php(17): require('/customers/5/d/...')
#7 {main}
  thrown in /customers/5/d/5/francomontanelli.com/httpd.www/wp-content/plugins/mailchimp-for-woocommerce/includes/tracking/class-mailchimp-woocommerce-pixel-tracking.php on line 368