ActiveRecord::RecordNotFound in WebController#web_cart

Couldn't find Cart without an ID

Extracted source (around line #1187):
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@title ="Cesta"
@cart = Cart.find(session[:cart_id])
end

Rails.root: /var/www/vhosts/lifemieres.com/lifemieres

Application Trace | Framework Trace | Full Trace
app/controllers/web_controller.rb:1187:in `web_cart'

Request

Parameters:

None

Response

Headers:

None