Solución al error Notice: ob_end_flush(): failed to send buffer of zlib output compression (1) in

Solución al error en WordPress:
«Notice: ob_end_flush(): failed to send buffer of zlib output compression (1) in».
Código HTML para reemplazar en /wp-includes/funtions.php:

remove_action( ‘shutdown’, ‘wp_ob_end_flush_all’, 1 );