,
						'wp-element-button',
						'wc-block-components-product-button__button',
						$product->is_purchasable() && $product->is_in_stock() ? 'add_to_cart_button' : '',
						$is_ajax_button ? 'ajax_add_to_cart' : '',
						'product_type_' . $product->get_type(),
						esc_attr( $styles_and_classes['classes'] ),
					)
				)
			);

			$default_quantity = 1;
			/**
			* Filters the change the quantity to add to cart.
			*
			* @since 10.9.0
			* @param number $default_quantity The default quantity.
			* @param number $product_id The product id.
			*/
			$quantity_to_add = apply_filters( 'woocommerce_add_to_cart_quantity', $default_quantity, $product->get_id() );

			$context = array(
				'quantityToAdd'          => $quantity_to_add,
				'productId'              => $product->get_id(),
				'addToCartText'          => null !== $product->add_to_cart_text() ? $product->add_to_cart_text() : __( 'Add to cart', 'woocommerce' ),
				'temporaryNumberOfItems' => $number_of_items_in_cart,
				'animationStatus'        => 'IDLE',
			);

			/**
			 * Allow filtering of the add to cart button arguments.
			 *
			 * @since 9.7.0
			 */
			$args = apply_filters(
				'woocommerce_loop_add_to_cart_args',
				array(
					'class'      => $html_classes,
					'attributes' => array(
						'data-product_id'  => $product->get_id(),
						'data-product_sku' => $product->get_sku(),
						'aria-label'       => $product->add_to_cart_description(),
						'rel'              => 'nofollow',
					),
				),
				$product
			);

			if ( isset( $args['attributes']['aria-label'] ) ) {
				$args['attributes']['aria-label'] = wp_strip_all_tags( $args['attributes']['aria-label'] );
			}

			if ( isset( WC()->cart ) && ! WC()->cart->is_empty() ) {
				$this->prevent_cache();
			}

			$interactive = array(
				'namespace' => 'woocommerce/product-button',
			);

			$div_directives = '
				data-wc-interactive=\'' . wp_json_encode( $interactive, JSON_NUMERIC_CHECK | JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP ) . '\'
				data-wc-context=\'' . wp_json_encode( $context, JSON_NUMERIC_CHECK | JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP ) . '\'
			';

			$button_directives = '
				data-wc-on--click="actions.addToCart"
				data-wc-class--loading="context.isLoading"
			';

			$anchor_directive = '
				data-wc-on--click="woocommerce/product-collection::actions.viewProduct"
			';

			$span_button_directives = '
				data-wc-text="state.addToCartText"
				data-wc-class--wc-block-slide-in="state.slideInAnimation"
				data-wc-class--wc-block-slide-out="state.slideOutAnimation"
				data-wc-on--animationend="actions.handleAnimationEnd"
				data-wc-watch="callbacks.startAnimation"
				data-wc-layout-init="callbacks.syncTemporaryNumberOfItemsOnLoad"
			';

			$wrapper_attributes = get_block_wrapper_attributes(
				array(
					'class' => implode(
						' ',
						array_filter(
							[
								'wp-block-button wc-block-components-product-button',
								esc_attr( $classname . ' ' . $custom_width_classes . ' ' . $custom_align_classes ),
							]
						)
					),
				)
			);

			/**
			 * Filters the add to cart button class.
			 *
			 * @since 8.7.0
			 *
			 * @param string $class The class.
			 */
			return apply_filters(
				'woocommerce_loop_add_to_cart_link',
				strtr(
					'<div {wrapper_attributes}
						{div_directives}
					>
						<{html_element}
							href="{add_to_cart_url}"
							class="{button_classes}"
							style="{button_styles}"
							{attributes}
							{button_directives}
						>
						<span {span_button_directives}> {add_to_cart_text} </span>
						</{html_element}>
						{view_cart_html}
					</div>',
					array(
						'{wrapper_attributes}'     => $wrapper_attributes,
						'{html_element}'           => $html_element,
						'{add_to_cart_url}'        => esc_url( $product->add_to_cart_url() ),
						'{button_classes}'         => isset( $args['class'] ) ? esc_attr( $args['class'] . ' wc-interactive' ) : 'wc-interactive',
						'{button_styles}'          => esc_attr( $styles_and_classes['styles'] ),
						'{attributes}'             => isset( $args['attributes'] ) ? wc_implode_html_attributes( $args['attributes'] ) : '',
						'{add_to_cart_text}'       => esc_html( $initial_product_text ),
						'{div_directives}'         => $is_ajax_button ? $div_directives : '',
						'{button_directives}'      => $is_ajax_button ? $button_directives : $anchor_directive,
						'{span_button_directives}' => $is_ajax_button ? $span_button_directives : '',
						'{view_cart_html}'         => $is_ajax_button ? $this->get_view_cart_html() : '',
					)
				),
				$product,
				$args
			);
		}
	}

	/**
	 * Get the number of items in the cart for a given product id.
	 *
	 * @param number $product_id The product id.
	 * @return number The number of items in the cart.
	 */
	private function get_cart_item_quantities_by_product_id( $product_id ) {
		if ( ! isset( WC()->cart ) ) {
			return 0;
		}

		$cart = WC()->cart->get_cart_item_quantities();
		return isset( $cart[ $product_id ] ) ? $cart[ $product_id ] : 0;
	}

	/**
	 * Prevent caching on certain pages
	 */
	private function prevent_cache() {
		\WC_Cache_Helper::set_nocache_constants();
		nocache_headers();
	}

	/**
	 * Get the view cart link html.
	 *
	 * @return string The view cart html.
	 */
	private function get_view_cart_html() {
		return sprintf(
			'<span
				hidden
				data-wc-bind--hidden="!state.displayViewCart"
			>
				<a
					href="%1$s"
					class="added_to_cart wc_forward"
					title="%2$s"
				>
					%3$s
				</a>
			</span>',
			esc_url( wc_get_cart_url() ),
			esc_attr__( 'View cart', 'woocommerce' ),
			esc_html__( 'View cart', 'woocommerce' )
		);
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'Automattic\WooCommerce\Blocks\BlockTypes\ProductButton' not found in /home/htzanetatos/public_html/wp-content/plugins/woocommerce/src/Blocks/BlockTypesController.php:154
Stack trace:
#0 /home/htzanetatos/public_html/wp-includes/class-wp-hook.php(324): Automattic\WooCommerce\Blocks\BlockTypesController-&gt;register_blocks('')
#1 /home/htzanetatos/public_html/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters(NULL, Array)
#2 /home/htzanetatos/public_html/wp-includes/plugin.php(517): WP_Hook-&gt;do_action(Array)
#3 /home/htzanetatos/public_html/wp-settings.php(704): do_action('init')
#4 /home/htzanetatos/public_html/wp-config.php(83): require_once('/home/htzanetat...')
#5 /home/htzanetatos/public_html/wp-load.php(50): require_once('/home/htzanetat...')
#6 /home/htzanetatos/public_html/wp-blog-header.php(13): require_once('/home/htzanetat...')
#7 /home/htzanetatos/public_html/index.php(17): require('/home/htzanetat...')
#8 {main}
  thrown in <b>/home/htzanetatos/public_html/wp-content/plugins/woocommerce/src/Blocks/BlockTypesController.php</b> on line <b>154</b><br />