title: How to define menu item under Messagin menu in odoo?
body: <p><strong>Hello</strong>,</p>
  
  <p>I'm diving in Odoo through a book a bought called Odoo Development Essentials.
  I'm trying to create a todo module.
  By now i managed to create the module and installed it in the admin.</p>
  
  <p><a href="https://i.stack.imgur.com/mtFl4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mtFl4.png" alt="enter image description here"></a></p>
  
  <p>In the module, there are : </p>
  
  <p><strong>openerp</strong>.py</p>
  
  <pre><code>{
      'name': "Todo App",
      'description': "Long description of module's purpose",
      'author': "TSA",
      'depends': ['mail'],
      'application':True,
      'data': ['todo_view.xml'],
  }
  </code></pre>
  
  <p>todo_model.py</p>
  
  <pre><code>from openerp import models, fields
  class TodoTask(models.Model):
      _name = 'todo.task'
      name= fields.Char('Description',required=True)
      is_done = fields.Boolean('Done?')
      active = fields.Boolean('Active?',default=True)
  </code></pre>
  
  <p><strong>init</strong>.py</p>
  
  <pre><code>from . import todo_model
  </code></pre>
  
  <p>todo_view.xml</p>
  
  <pre><code>&lt;openerp&gt;
  
  &lt;data&gt;
  
      &lt;!-- Action to open todo task list --&gt;
      &lt;act_window id="action_todo_task" name="Todo Task" res_model = "todo.task" view_mode="three,form"/&gt;
  
      &lt;!-- Menu item to open Todo task list --&gt;
      &lt;menuitem id="menu_todo_task" name="Todo Tasks" parent="mail.mail_feeds" sequence="20" action="action_todo_task"/&gt;
  
  &lt;/data&gt;
  </code></pre>
  
  <p></p>
  
  <p>The book says that, the menuitem with the parent mail.mail_feeds is used to add a menu item under the Messaging menu. Actually it does but when i try to click on the menu i have an error like this one:</p>
  
  <p><a href="https://i.stack.imgur.com/nUwnF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nUwnF.png" alt="enter image description here"></a></p>
  
  <p>I searched for hints on google but nothing found...
  Can someone help me?</p>
  
  <p>Thank you,
  Thomas</p>