What a WooCommerce cart emptied incident means
A cart emptied incident happens when WooCommerce loses the cart state before payment. The product page and add-to-cart button can look fine, but checkout cannot continue because the cart is empty, stale or redirected.
The useful signal is the difference between the expected journey and the observed state: product selected, cart expected, checkout reached, then cart missing or checkout redirected away from payment.
Cart failure signals to monitor
- Cart item count drops to zero between add-to-cart and checkout.
- Checkout redirects to cart even though a product was just added.
- Session, cookie, cache or CDN behaviour clears cart state.
- Store API cart responses disagree with the visible checkout step.
- A plugin, theme or payment update changes cart or checkout persistence.
Evidence without sensitive cart contents
A safe monitor does not need customer identity, product names, addresses or payment data. It can record expected cart state, observed empty-cart signal, status family, timing and the step where checkout became impossible.
How CashFlowCanary helps
CashFlowCanary checks cart continuity and checkout reachability together. When add-to-cart works but checkout loses the cart, the alert separates session, cache, Store API, redirect and plugin-regression causes with proof your team can verify quickly.