Controller not loading page

In your method:

Code:

 function index($product)

What is the default value of $product? 
For example:

Code:

function index($product="default_product_code")

I don't see how it can be set using the URL which you used to test this:

mysite.com/details3/product

Which does not contain a value for $1, so a default product value is needed.

This might not be the only problem but...

CI 3.1 Kubuntu 19.04 Apache 5.x  Mysql 5.x PHP 5.x PHP 7.x
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