If you're getting this error when attempting to delete an invoice:
It's because there is a payment applied on the invoice. Go into the invoice, delete the payments and then re-attempt to delete the invoice:
Updated
<% if (previousArticle) { %>
<% } %>
<% if (allItems.length > 1) { %>
<% if (previousTitle) { %>
<% } %>
<% if (nextArticle) { %>
<%= previousTitle %>
<% } %> <%= previousArticle.title %>
<% if (nextTitle) { %>
<% } %>
<%= nextTitle %>
<% } %> <%= nextArticle.title %>In this article
-
<% allItems.forEach(function(item) { %>
- <%= item.name %> <%= partial('partial-table-of-contents', { items: item.children, partial: partial }) %> <% }); %>
-
<% items.forEach(function(item) { %>
- <%= item.name %> <%= partial('partial-table-of-contents', { items: item.children, partial: partial }) %> <% }); %>
