title: Duplicate id layout error
body: <p>I've got the following error in a TextView inside my layout.</p>
  
  <blockquote>
    <p>Duplicate id @+id/communications, already defined earlier in this
    layout</p>
  </blockquote>
  
  <p>But it is not duplicated. I don't know why and what causes this error. Please help!</p>