How to create a “Read More” link in a custom excerpt

Custom_Excerpt_Read_More

// Taken from this thread https://wordpress.stackexchange.com/questions/134143/how-can-i-create-a-read-more-link-using-the-excerpt-on-a-static-front-page?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa

function new_excerpt_more($more) {
    return '';
}
add_filter('excerpt_more', 'new_excerpt_more', 21 );

function the_excerpt_more_link( $excerpt ){
    $post = get_post();
    $excerpt .= '... <a href="'. get_permalink($post->ID) . '">continue reading</a>.';
    return $excerpt;
}
add_filter( 'the_excerpt', 'the_excerpt_more_link', 21 );