title: WORDPRESS: My categories page, show an empty page
body: <p>when I navigate through my website the category link works great, but when I copy/paste the URL, it shows an empty page.</p>
  
  <p>This happens only on category/subcategories URLs.</p>
  
  <p>My permalink structure is that: /%category%/%postname%/</p>
  
  <p>(The theme is a custom developed theme by me, and it is not uploaded yet to my hosting server, so it runs locally for now)</p>