old_contents: from django.contrib import admin
  from models import InterestedForm
  
  
  class InterestedFormAdmin(admin.ModelAdmin):
      pass
  
  admin.register(InterestedFormAdmin, InterestedForm)
  # Register your models here.
  
new_contents: from django.contrib import admin
  from models import InterestedForm
  
  
  class InterestedFormAdmin(admin.ModelAdmin):
      list_display = ('first_name', 'last_name', 'email', 'timezone')
  
  
  admin.site.register(InterestedForm, InterestedFormAdmin)
  
subject: fix pages/admin.py for InterestedForm