Django模板加载器无法加载通过pip安装的应用程序的模板

myproject/
    manage.py
    myproject/
        settings.py
        urls.py
        wsgi.py
    myapp/
        templates/
            myapp/
                index.html
        views.py

INSTALLED_APPS = [
    ...
    'myapp',
    ...
]

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates')],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

from django.shortcuts import render

def index(request):
    return render(request, 'myapp/index.html')

from django.urls import path
from myapp.views import index

urlpatterns = [
    path('', index, name='index'),
]