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't loading. They are saying there is something wrong with my routing file, specifically:

A YAML file cannot contain tabs as indentation

I don't know what I have done wrong. Here is my routing file.

community_online_shop_homepage:     pattern: /     defaults: { _controller: CommunityOnlineShopBundle:Page:index } _login:     pattern: /login     defaults: { _controller: CommunityOnlineShopBundle:Page:login} 

Answer 1

A YAML file use spaces as indentation, you can use 2 or 4 spaces for indentation, but no tab. In other words, tab indentation is forbidden:

Why does YAML forbid tabs?

Tabs have been outlawed since they are treated differently by different editors and tools. And since indentation is so critical to proper interpretation of YAML, this issue is just too tricky to even attempt.

(source: YAML FAQ (thanks to Destiny Architect for the link))

For example, the Symfony configuration file can be written with 2 or 4 spaces as indentation:

4 spaces

doctrine:     dbal:         default_connection: default 

2 spaces

doctrine:   dbal:     default_connection: default 

Answer 2

IF you are using EditorConfig make sure to add this to your .editorconfig file

[*.yml] indent_style = space indent_size = 4 

you can change indent_size to 2, depends on your preferences