SEO & URL's - category_rule

[cdwebman]

I am migration a Prestashop 1.6 to Thirty Bees, which seems to have no problem, also the layout looks good

with the used Prestashop 1.6 theme :)

 

When testing, there's a problem with the categories, when i click a category link, i get an 404 error message.

In SEO and URL's my category_rule is :

{meta_title}_{id}

But i get an error message :  

** Keyword "{rewrite}" required for route "category_rule" (rule: "{meta_title}_{id}")  **

I dont't want to change that route, because all product categories URL's will be changed !

Why can't i use "{meta_title}_{id}" in Thirty Bees, while this do work in PrestaShop 1.6 !???