Getting redirect to happen before header output
Your method is called too late. I don’t know how you call this method but you need to run it before output is sent to the browser– usually that means before get_header(). There are a number of hooks that can be used. For example (from https://wordpress.stackexchange.com/a/131210/21376): add_action( ‘template_redirect’, function() { if (is_single()) { wp_safe_redirect(home_url()); exit; … Read more