Denied Access to Uncle Cheese DropZone Vendor Resources

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<%= t 'js.tagging.tags' %>: <%- @topic_view.topic.tags.each do |t| %> <%= t %> <%- end %>
<% end %>

Hi,

I am using unclecheese/dropzone in a File field in sivlerstripe multi-form which is working fine however, when I go to a next step and come back to the file field the page keeps loading and I get the access denied for file icons JPG. I also cant see the uploaded thumbnail.

Highly appreciate your help and time. Thanking you in advance.