^^&&^^

Edit File: class-kkart-product-simple.php

<?php
/**
 * Simple Product Class.
 *
 * The default product type kinda product.
 *
 * @package Kkart\Classes\Products
 */

defined( 'ABSPATH' ) || exit;

/**
 * Simple product class.
 */
class KKART_Product_Simple extends KKART_Product {

/**
	 * Initialize simple product.
	 *
	 * @param KKART_Product|int $product Product instance or ID.
	 */
	public function __construct( $product = 0 ) {
		$this->supports[] = 'ajax_add_to_cart';
		parent::__construct( $product );
	}

/**
	 * Get internal type.
	 *
	 * @return string
	 */
	public function get_type() {
		return 'simple';
	}

/**
	 * Get the add to url used mainly in loops.
	 *
	 * @return string
	 */
	public function add_to_cart_url() {
		$url = $this->is_purchasable() && $this->is_in_stock() ? remove_query_arg(
			'added-to-cart',
			add_query_arg(
				array(
					'add-to-cart' => $this->get_id(),
				),
				( function_exists( 'is_feed' ) && is_feed() ) || ( function_exists( 'is_404' ) && is_404() ) ? $this->get_permalink() : ''
			)
		) : $this->get_permalink();
		return apply_filters( 'kkart_product_add_to_cart_url', $url, $this );
	}

/**
	 * Get the add to cart button text.
	 *
	 * @return string
	 */
	public function add_to_cart_text() {
		$text = $this->is_purchasable() && $this->is_in_stock() ? __( 'Add to cart', 'kkart' ) : __( 'Read more', 'kkart' );

return apply_filters( 'kkart_product_add_to_cart_text', $text, $this );
	}

/**
	 * Get the add to cart button text description - used in aria tags.
	 *
	 * @since 3.3.0
	 * @return string
	 */
	public function add_to_cart_description() {
		/* translators: %s: Product title */
		$text = $this->is_purchasable() && $this->is_in_stock() ? __( 'Add &ldquo;%s&rdquo; to your cart', 'kkart' ) : __( 'Read more about &ldquo;%s&rdquo;', 'kkart' );

return apply_filters( 'kkart_product_add_to_cart_description', sprintf( $text, $this->get_name() ), $this );
	}
}