NoMethodError in CurrentServicesController#index

undefined method `image' for nil:NilClass

Extracted source (around line #23):
21
22
23
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25
26
          
if @current_types.index(product.product_type)==nil
@current_types << product.product_type
@current_images << @protypes.where(name: product.product_type).first.image
#@current_urls << product.supplier.url
end
end

Rails.root: /home/countyfire/website/countyfire.org

Application Trace | Framework Trace | Full Trace
app/controllers/current_services_controller.rb:23:in `block in index'
app/controllers/current_services_controller.rb:20:in `index'

Request

Parameters:

None

Response

Headers:

None