A YAML file cannot contain tabs as indentation

Question

This is my first work with Symfony 2. All I am trying to do here is whenever the user clicks on the submit button he will go to another page.

But my index page isn\'

Answer 1

A YAML file cannot contain tabs as indentation, so the mistake is here: C:\\xampp\\htdocs\\api\\app/../src/AppBundle/Resources/config/valida tor.yml" at line 9 (near " - { resource: validators/services.yml }").