Checkout error: I18n Error: Missing interpolation value "savings" for "You're saving {{ savings }}"

[rabbit160]

Hi there,

When I activate a discount to my store, the cart has this error message at the bottom of the cart area: I18n Error: Missing interpolation value "savings" for "You're saving {{ savings }}".

This is what the code is in my theme: 

{% if cart.total_discounts > 0 %}
{% assign cartTotalDiscounts = cart.total_discounts | money %}
<p class="cart__savings">{{ 'cart.general.savings_html' | t: savings: cartTotalDiscounts }}</p>
{% endif %}

How do I get rid of this and instead have "you're saving $XXX"

Thanks heaps 🙂