NoMethodError in Web#web_product

Showing /var/www/vhosts/lolitamoda.pt/lolitapt/app/views/web/web_product.html.erb where line #696 raised:

undefined method `image' for nil:NilClass

Extracted source (around line #696):

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<span class="seleccione" style="color:#a0a0a0 !important; font-size: 15px; padding-left: 40px;">Disponível em <%= colores %> cores</span>
</div>
<div class="colores-disponibles">
<div class="color-disponible"><%= image_tag(@product.photos.order(:position).first.image.mini, :style => "border : 1px solid #ff6600;") %></div>
<% Product.where("id in (?)", @array_related_colors).each do |c| %>
<% if(c.photos.order(:position).count > 0)%>
<div class="color-disponible"><%= link_to image_tag(c.photos.order(:position).first.image.mini, :style => "border : 1px solid #efefef;"), web_product_path(c) %></div>

Rails.root: /var/www/vhosts/lolitamoda.pt/lolitapt

Application Trace | Framework Trace | Full Trace
app/views/web/web_product.html.erb:696:in `_app_views_web_web_product_html_erb__1125581150292782502_47046136561900'

Request

Parameters:

{"id"=>"20930-t-shirt-mayoral-basico-amarelo-para-menino"}

Response

Headers:

None