how to install bootstrap in symfony2? - templates

Question

I installed bootstrap through this link
But when I run
php app/console server:run
To check if it is working it returns an error.
The error is
[Symfony\Component\Config\Definition\Exception\InvalidConfigurationException]
Invalid configuration for path "assetic.filters.file":
The assetic.filters
config "C:/wamp/www/bootstrap/app/../vendor/leafo/lessphp/lessc.in
c.php" must be either null or an array.
How to remove this exception?
here is my config.yml
imports:
- { resource: parameters.yml }
- { resource: security.yml }
framework:
#esi: ~
#translator: { fallback: %locale% }
secret: %secret%
router:
resource: "%kernel.root_dir%/config/routing.yml"
strict_requirements: %kernel.debug%
form: ~
csrf_protection: ~
validation: { enable_annotations: true }
templating:
engines: ['twig']
#assets_version: SomeVersionScheme
default_locale: "%locale%"
trusted_proxies: ~
session: ~
fragments: ~
# Twig Configuration
twig:
form:
resources:
- "AcmeBundle:Form:form_div_layout.html.twig"
# Assetic Configuration
assetic:
debug: %kernel.debug%
use_controller: false
bundles: [ ]
#java: /usr/bin/java
filters:
lessphp:
file: %kernel.root_dir%/../vendor/leafo/lessphp/lessc.inc.php
apply_to: "\.less$"
cssrewrite: ~
#closure:
# jar: %kernel.root_dir%/Resources/java/compiler.jar
#yui_css:
# jar: %kernel.root_dir%/Resources/java/yuicompressor-2.4.7.jar
bc_bootstrap:
assets_dir: %kernel.root_dir%/../vendor/twitter/bootstrap
jquery_path: %kernel.root_dir%/../vendor/jquery/jquery/jquery-1.9.1.js
# Doctrine Configuration
doctrine:
dbal:
driver: %database_driver%
host: %database_host%
port: %database_port%
dbname: %database_name%
user: %database_user%
password: %database_password%
charset: UTF8
# if using pdo_sqlite as your database driver, add the path in parameters.yml
# e.g. database_path: %kernel.root_dir%/data/data.db3
# path: %database_path%
orm:
auto_generate_proxy_classes: %kernel.debug%
auto_mapping: true
# Swiftmailer Configuration
swiftmailer:
transport: %mailer_transport%
host: %mailer_host%
username: %mailer_user%
password: %mailer_password%
spool: { type: memory }

Answer 1

The indentation is important in yml files.
file and apply_to should be with 4 more spaces.