Just kidding! You tried going to https://blog.fabianobento.com.br/php/3-02-00-ans-arquivo-xml-arquivos-xml-padrao-ans-tiss-tuss-validacao-xml-tiss-validador-tiss-validador-xml/, which doesn't exist, so that means I probably broke something.

The following is a list of the latest posts from the blog. Maybe it will help you find what you're looking for.