HG debug — No page found for slug 'authentication'

REQUEST_URI  : /authentication/
PATH_INFO    : —
GET[slug]    : authentication
Resolved slug: authentication

subcategories rows:
  id=10  slug='albert-bracelets'  name='Albert Bracelets'  active=1
  id=15  slug='albert-chains'  name='Albert Chains'  active=1
  id=6  slug='antique-rings'  name='Antique Rings'  active=1
  id=4  slug='antique-wedding-rings'  name='Antique Wedding Rings'  active=1
  id=1  slug='art-deco-rings'  name='Art Deco Rings'  active=1
  id=31  slug='bangles'  name='Bangles'  active=1
  id=26  slug='bracelets'  name='Bracelets'  active=1
  id=52  slug='britannias'  name='Britannias'  active=1
  id=22  slug='brooches'  name='Brooches'  active=1
  id=12  slug='charm-bracelets'  name='Charm Bracelets'  active=1
  id=21  slug='charms'  name='Charms'  active=1
  id=5  slug='cocktail-rings'  name='Cocktail Rings'  active=1
  id=2  slug='coloured-gemstone-rings'  name='Coloured Gemstone Rings'  active=1
  id=18  slug='diamond-earrings'  name='Diamond Earrings'  active=1
  id=3  slug='diamond-rings'  name='Diamond Rings'  active=1
  id=16  slug='drop-earrings'  name='Drop Earrings'  active=1
  id=29  slug='earrings'  name='Earrings'  active=1
  id=35  slug='emerald-rings'  name='Emerald Rings'  active=1
  id=7  slug='engagement-rings'  name='Engagement Rings'  active=1
  id=33  slug='eternity-rings'  name='Eternity Rings'  active=1
  id=9  slug='gate-bracelets'  name='Gate Bracelets'  active=1
  id=19  slug='gemstone-earrings'  name='Gemstone Earrings'  active=1
  id=23  slug='gentlemens-wear'  name='Gentlemens Wear'  active=1
  id=8  slug='gents-gold-rings'  name='Gents Rings Gold'  active=1
  id=32  slug='gents-rings'  name='Gents Rings'  active=1
  id=20  slug='gold-earrings'  name='Gold Earrings'  active=1
  id=36  slug='gold-rings'  name='Gold Rings'  active=1
  id=50  slug='half-sovereigns'  name='Half Sovereigns'  active=1
  id=17  slug='hoop-earrings'  name='Hoop Earrings'  active=1
  id=48  slug='investment-gold'  name='Investment Gold'  active=1

category_meta_data rows:
  id=1  slug='bracelets'  name='Bracelets'  active=1
  id=2  slug='rings'  name='Rings'  active=1
  id=3  slug='other'  name='Other Jewellery'  active=1
  id=4  slug='investment-gold'  name='Investment Gold'  active=1

To create /authentication as a subcategory page:
  INSERT INTO subcategories (slug, name, is_active) VALUES ('authentication','Your Name',1);
  Then add stock_subcategory_placements rows linking stock IDs to that subcategory id.