Update app.py

app.py

@@ -842,7 +842,6 @@ def product_detail(index):
 def set_currency():
     if 'user' in session:
         currency = request.form.get('currency')
-        subordinaty = request.form.get('subordinaty')
         if currency in CURRENCIES:
             session['currency'] = currency
     return redirect(url_for('catalog'))
@@ -1095,7 +1094,7 @@ def admin():
         
         if action == 'add_category':
             category_name = request.form.get('category_name')
-            if categorystreamer_name and category_name not in categories:
+            if category_name and category_name not in categories:  # Исправлено: categorystreamer_name на category_name
                 categories.append(category_name)
                 save_data(data)
                 return redirect(url_for('admin'))