TypeError: Cannot read property 'number' of undefined

[epszaw]

Hey guys!
I have some troubles with generation "paged" pages.
I try use example and have error:
TypeError: Cannot read property 'number' of undefined
Example code:

<!-- Page Content -->
<% for document in @getPageCollection('posts').toJSON(): %>
    <article id="post" class="post">
        <h1><a href='<%=document.url%>'><%= document.title %></a></h1>
        <div class="post-date"><%= document.date.toLocaleDateString() %></div>
        <div class="post-content">
            <%- document.contentRenderedWithoutLayouts %>
        </div>
    </article>
<% end %>

<!-- Page Listing -->
<div class="pagination">
    <ul>
        <!-- Previous Page Button -->
        <% unless @hasPrevPage(): %>
            <li class="disabled"><span>Prev</span></li>
        <% else: %>
            <li><a href="<%= @getPrevPage() %>">Prev</a></li>
        <% end %>

        <!-- Page Number Buttons -->
        <% for pageNumber in [0..@document.page.count-1]: %>
            <% if @document.page.number is pageNumber: %>
                <li class="active"><span><%= pageNumber + 1 %></span></li>
            <% else: %>
                <li><a href="<%= @getPagedUrl(pageNumber) %>"><%= pageNumber + 1 %></a></li>
            <% end %>
        <% end %>

        <!-- Next Page Button -->
        <% unless @hasNextPage(): %>
            <li class="disabled"><span>Next</span></li>
        <% else: %>
            <li><a href="<%= @getNextPage() %>">Next</a></li>
        <% end %>
    </ul>
</div>

On meta-data of layout page, I paste:

pagedCollection: 'posts'
pageSize: 5
order: 1
isPaged: true

How I can solve this error?

[epszaw]

I solve this problem.
Other file recalls this template file and this template has parameters from file.