Django admin page appears to be blank

Question

I wondered if someone could help me resolve as to why my admin page appears to be blank? I am able to log in successfully with my superuser. For example when I go to localhost:8000/admin/ -the page returns with a login form, then when I click 'login' the resulting page is blank. I have already checked that 'django.contrib.admin' is installed in every URLS file. I have registered the models in the django admin.py files. I have also reinstalled Django.

INSTALLED_APPS = [
    'HealthcareProject4',
    'HealthcareProject4.Users2',
    'HealthcareProject4.Admin',
    'HealthcareProject4.CellularModelling',
    'HealthcareProject4.Conditions',
    'HealthcareProject4.Drugs',
    'HealthcareProject4.Events',
    'HealthcareProject4.Games',
    'HealthcareProject4.GetInvolved',
    'HealthcareProject4.News',
    'HealthcareProject4.Outcomes',
    'HealthcareProject4.Population',
    'HealthcareProject4.Systems',
    'HealthcareProject4.Trusts',
    'HealthcareProject4.Logging',
    'HealthcareProject4.Messaging',
    # Add your apps here to enable them
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    # Other apps #
    #'highcharts'
]

urls.py

app_name = "Conditions"

from datetime import datetime
from django.urls import path
from django.contrib import admin
from django.contrib.auth.views import LoginView, LogoutView
from django.conf.urls import include
from django.conf.urls import url
from HealthcareProject4.Conditions import views


urlpatterns = [
  url('^admin/', admin.site.urls),
  url('^home/', views.home, name='home'),
  url('^asthma/', views.asthma, name='Asthma'),
  url('^atrialfibrillation', views.atrialfibrillation, name='AtrialFibrillation'),
  url('^bloodpressure/', views.bloodpressure, name='BloodPressure'),
  url('^cancer/', views.cancer, name='Cancer'),
  url('^cervicalscreening/', views.cervicalscreening, name='CervicalScreening'),
  url('^chronicheartdisease/', views.chronicheartdisease, name='ChronicHeartDisease'),
  url('^chronickidneydisease/', views.chronickidneydisease, name='ChronicKidneyDisease'),
  url('^copd/', views.copd, name='COPD'),
  url('^cvd/', views.cvd, name='CVD'),
  url('^dementia/', views.dementia, name='Dementia'),
  url('^depression/', views.depression, name='Depression'),
  url('^diabetes/', views.diabetes, name='Diabetes'),
  url('^epilepsy/', views.epilepsy, name='Epilepsy'),
  url('^heartfailure/', views.heartfailure, name='HeartFailure'),
  url('^hypertension/', views.hypertension, name='Hypertension'),
  url('^learningdisability/', views.learningdisability, name='LearningDisability'),
  url('^mentalhealth/', views.mentalhealth, name='MentalHealth'),
  url('^obesity/', views.obesity, name='Obesity'),
  url('^osteoporosis/', views.osteoporosis, name='Osteoporosis'),
  url('^palliativecare/', views.palliativecare, name='PalliativeCare'),
  url('^rheumatoidarthritis/', views.rheumatoidarthritis, name='RhemuatoidArthritis'),
  url('^smoking/', views.smoking, name='Smoking'),
  url('^stroke/', views.stroke, name='Stroke'),
  
  ]