## Part of the form
<%= f.select (:shipping, [
	['FedEx Home Delivery (3 business days) - $0', '0'],
	['FedEx Overnight Shipping - $15.00', '15.00'],
	]
) %>
</div>

<div class="bg">
<div class="total"><strong>Order Total: $<%= @order_total_six + @shipping %></strong></div>

## Error I am getting
can't convert nil into String

 TypeError in Public#order_page

Showing app/views/public/order_page.html.erb where line #52 raised:

can't convert nil into String

Extracted source (around line #52):

49: </div>
50:
51: <div class="bg">
52: <div class="total"><strong>Order Total: $<%= @order_total_six + @shipping %></strong></div>
53: </div>
54: </div>
55: </div>


## Notes:
I am trying to add the value from the shipping together. The problem might be I am trying
to add the symbol (:shipping) with the instance variable I defined in my controller.
I thought :symboles turned into instance variables in the view.