Suddenly seeing this error in Woocommerce logs after update from WC 5.6.4. to 3.6.5, X theme 6.5.5 and ubermenu (installled via X theme) 3.6.0.1.
2019-09-18T10:49:09+00:00 CRITICAL Uncaught Error: Call to a member function get_cart_total() on null in /site/wp-content/themes/x/framework/functions/plugins/woocommerce.php:393
Stack trace:
#0 /site/wp-content/themes/x/framework/functions/plugins/woocommerce.php(447): x_woocommerce_navbar_cart()
#1 /site/wp-includes/class-wp-hook.php(286): x_woocommerce_navbar_menu_item('<li id="menu-it...', Object(stdClass))
#2 /site/wp-includes/plugin.php(208): WP_Hook->apply_filters('<li id="menu-it...', Array)
#3 /site/wp-includes/nav-menu-template.php(243): apply_filters('wp_nav_menu_ite...', '<li id="menu-it...', Object(stdClass))
#4 /site/wp-content/plugins/ubermenu/includes/ubermenu.api.php(5): wp_nav_menu(Object(stdClass))
#5 /site/wp-content/themes/x/framework/legacy/cranium/headers/views/global/_nav-primary.php(10): ubermenu('main', Array)
#6 /site/wp-content/themes/x/framework/functions/frontend/view-routing.php(182): include('/si...')
#7 / in /site/wp-content/themes/x/framework/functions/plugins/woocommerce.php on line 393
Any idea? Not really sure what happens on the user side.