Redirect the user to checkout page when user try to visit the cart page

functions.php

function gbol_template_redirect_cart_redirect( $permalink ) {
    $cart_id = wc_get_page_id('cart');
    $checkout_id = wc_get_page_id('checkout');

    /**
     * Skip if this is not a cart page
     */
    if ( $cart_id == $checkout_id ) { 
        return;
    }

    if ( ! is_cart() ) { 
        return; 
    }

    if ( WC()->cart->get_cart_contents_count() > 0 ) {
        // Redirect to checkout page
        wp_redirect( wc_get_checkout_url(), '301' );
        exit;
    }
}
add_action( 'template_redirect', 'gbol_template_redirect_cart_redirect' );