I'm focusing on a news site for any firm.

I set the permalink towards the category, and also the category link is working however the child category link isn't working.

category -> "World" (Could Be Seen)
child group of "World" -> Europe (Can Not Be Seen)

website.com/lifestyle/ (Works)
website.com/lifestyle/health/ (No longer working) < - child category

this is the link to the site