Add django gis extension

backend/right_tree/settings.py

@@ -37,6 +37,7 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'django.contrib.gis',
 
     'rest_framework',
     'corsheaders',
@@ -81,7 +82,7 @@ WSGI_APPLICATION = 'right_tree.wsgi.application'
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.postgresql',
+        'ENGINE': 'django.contrib.gis.db.backends.postgis',
         'NAME': 'right_tree',
         'USER': 'postgres',
         'PASSWORD': 'postgres',