The same problem is also for the button text.

This is how my functions.php looks like:

<?php
add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );
function theme_enqueue_styles() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/style.css' );

}

if ( ! function_exists( 'include_category' ) ) :
function include_category( $query ) {
   if ( $query->is_front_page() && $query->is_main_query() ) {
       $query->set( 'cat', '1' );
   }
}add_action( 'pre_get_posts', 'include_category' );
endif;
?>