I am trying to extending the Grouped Product using this as a guide: https://github.com/magento-user/magento2-groupedproducts-attribute
The end result is so that I can access the custom attributes of associated products on a grouped product page.
However, after added the new module/plugin using the github link referenced, now any product I try to open I get a 404 not found message.
Not sure how to evaluate what the problem is or reverse course on this.
Can anyone provide some guidance?