backend/config/urls.py

from django.conf import settings
from django.conf.urls.static import static
from django.contrib import admin
from django.urls import include, path
from drf_spectacular.views import (
    SpectacularAPIView,
    SpectacularRedocView,
    SpectacularSwaggerView,
)

urlpatterns = [
    path(settings.ADMIN_URL, admin.site.urls)
    # Your stuff: custom urls includes go here
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

# API URLS
urlpatterns += [
    # API base url
    path("api/", include("config.api_router")),
    path("api_schema/", SpectacularAPIView.as_view(), name="api-schema"),
    path("api_rschema/", SpectacularAPIView.as_view(), name="api-redoc-schema"),
    path(
        "api/docs/",
        SpectacularSwaggerView.as_view(url_name="api-schema"),
        name="home",
    ),
    path(
        "api/redoc/",
        SpectacularRedocView.as_view(url_name="api-redoc-schema"),
        name="home",
    ),
]

if settings.DEBUG:
    # This allows the error pages to be debugged during development, just visit
    # these url in browser to see how these error pages look like.
    if "debug_toolbar" in settings.INSTALLED_APPS:
        import debug_toolbar

        urlpatterns = [path("__debug__/", include(debug_toolbar.urls))] + urlpatterns