Auto-update cart subtotal not working

Can someone help me the issue? My cart cannot automatically update the subtotal with adjusted quantity. My store is using customized theme.

Here is the code:

{% if cart.item_count > 0 %}

{{ 'cart.general.title' | t }}

{% for item in cart.items %}

{{ item.product.title }}

{% include ‘w3-product-options’, step:‘money_line’ %}
{% unless item.variant.title contains ‘Default’ %}


{{ item.variant.title }}
{% endunless %}

{% if settings.product_quantity_message and item.variant.inventory_management and item.variant.inventory_quantity <= 0 and item.variant.incoming %}
{% assign date = item.variant.next_incoming_date | date: format: ‘month_day_year’ %}

{{ 'products.product.will_not_ship_until' | t: date: date }}

{% endif %}

{% assign property_size = item.properties | size %}

{% if property_size > 0 %}
{%- comment -%}{% for p in item.properties %}
{% if p.first.first == ‘’ %}{% continue %}{% endif %}
{% if forloop.first %}
{% endif %}
{% assign first_character_in_key = p.first | truncate: 1, ‘’ %}
{% unless p.last == blank or first_character_in_key == '
’ %}
{{ p.first }}:

{% if p.last contains ‘/uploads/’ %}
{{ p.last | split: ‘/’ | last }}
{% else %}
{{ p.last }}
{% endif %}


{% endunless %} {% endfor %}{%- endcomment -%}{% for p in item.properties %} {% if p.first contains '_apo' %}{% continue %}{% endif; %} {% unless p.last == blank %}
{{ p.first }}: {% if p.last contains '/uploads/' %} Uploaded File
{% else %} {{ p.last }}
{% endif %}
{% endunless %} {% endfor %}

{% endif %}

{% if item.original_line_price != item.line_price %} {% include 'w3-product-options', step:'money_line' %} {{ item.original_price | money }} {% endif %} {% include 'price' with item.price %}

{% endfor %}

{% for discount in item.discounts %} {{ discount.title }} {% endfor %}
{% if settings.cart_notes_enable %}
{{ 'cart.general.note' | t }} {{ cart.note }}
{% endif %}
{{ 'cart.general.subtotal' | t }} {% include 'price' with cart.total_price %} {% if cart.total_discounts > 0 %} {% assign savings = cart.total_discounts | money %} {{ 'cart.general.savings_html' | t: price: savings }} {% endif %}

{{ 'cart.general.taxes_extra' | t }}

{{ 'cart.general.checkout' | t }} {% if additional_checkout_buttons %}
Before you checkout, make sure you agree to all the customer policies, terms, and conditions. By click checkout, you agree to all the customer policies, terms, and conditions.
{% endif %}

{% else %}

{{ 'cart.general.title' | t }}

{{ 'cart.general.empty' | t }}

{{ 'cart.general.continue_browsing_html' | t }}

{{ 'cart.general.cookies_required' | t }}

{% endif %}

{{ shop.name }} process all orders in {{ shop.currency }}. While the content of your cart is currently displayed in , you will checkout using {{ shop.currency }} at the most current exchange rate.

Hi ando1031

Can you give me the website link to check?

Hello,

Here is the link: https://www.ureach-estore.com/

Thank you!