title: Class yii\debug\Module does not exist
body: <p>I am trying to run my Yii2 application on Vagran virtual machine. As provison I use Ansible. Here is my ansible playbook file:</p>
  
  <pre><code>---
  - hosts: vagrant
    sudo: true
    tasks:
  - name: 1. install Apache
    apt: name=apache2 state=present
  
  - name: 1.1 Delete temporary file
    file: path=/var/www/web/index.html state=absent
  
  - name: 2. install PHP module for Apache
    apt: name=php5 state=latest update_cache=yes
  
  - name: 3. Install PHP GD library
    apt: name=php5-cli state=latest
  
  - name: 4. Start Apache
    service: name=apache2 state=running enabled=yes
  
  - name: 5. Install MySQL
    apt: pkg=mysql-server state=present
  
  - name: 6. Install python-mysqldb
    apt: pkg=python-mysqldb state=present
  
  - name: 7. Install PHP MySQL bindings
    apt: pkg=php5-mysql state=present
  
  - name: 8. Restart apache
    service: name=apache2 state=restarted
  
  - name: 9. Set MySQL root password
    debconf: name='mysql-server' question='mysql-server/root_password' value='password' vtype='password'
  
  - name: 10. Confirm MySQL root password before installing
    debconf: name='mysql-server' question='mysql-server/root_password_again' value='password' vtype='password'
  
  - name: 11. Database creation with name gitSearch 
    mysql_db: name=gitSearch state=present
  
  - name: 12.a Copy database dump
    copy: src=../gitSearch.sql.bz2 dest=/tmp/gitSearch.sql.bz2 
  
  - name: 12.b Copy database dump
    mysql_db: name=gitSearch state=import target=/tmp/gitSearch.sql.bz2
  
  - name: 13. Ensure curl is installed
    apt: pkg=curl state=installed
    when: ansible_os_family == 'Debian'
  
  - name: 14. Install Composer into the current directory
    shell: &gt;
      curl -sS https://getcomposer.org/installer | php
      creates=/usr/local/bin/composer
  
  - name: 15. Install php5-curl
    apt: name=php5-curl state=latest update_cache=yes
  
  - name: 16. Move Composer into globally-accessible location.
    shell: &gt;
      mv composer.phar /usr/local/bin/composer
      creates=/usr/local/bin/composer
  
  - name: 18. Update dependencies v2
    composer: command=install working_dir=/var/www
  </code></pre>
  
  <p>When I run my project I have an exception:</p>
  
  <pre><code>ReflectionException
  
  Class yii\debug\Module does not exist
  in /var/www/vendor/yiisoft/yii2/di/Container.php
  </code></pre>
  
  <p>I think the problem is with composer, because before provision gets to composer tasks everything is fine. On my local machine (not Vagrant box) everything was fine too. Debugger section in config:</p>
  
  <pre><code>$config['modules']['debug']['class'] = 'yii\debug\Module';
  $config['modules']['debug']['allowedIPs'] = ['*']; 
  </code></pre>