Label are not showing while upgrading Ember version

I'm upgrading the ember from 1.4.0 to 1.12. While upgrading labels are not showing

This is my code for corresponding HBR file

    <div class="checkbox-set">
        <ul class="check-list">
            
                
                    <li class="check-list-entry location" >
                        
                            
                            <mo-label>}</mo-label>
                        
                        
                    </li>
                
            
        </ul>
        
    </div>

I need to show the label details by using the above HBR file code.