使用dj-rest-auth注册返回HTTP 204无内容，未生成Token问题求助

我在学习William.S.Vincent所著的《Django for APIs》一书第8章「用户认证」时，采用dj-rest-auth和django-allauth实现Token认证的用户注册功能。书中注册成功会返回HTTP 201 Created状态码，创建新账户的同时生成并返回API认证Token，且Token会保存至数据库。但我的实现返回HTTP 204 No Content状态码，虽然账户能成功创建，却没有生成对应的Token。

我的urls.py代码 #

urlpatterns = [
path('admin/', admin.site.urls),
path('api/v1/', include("posts.urls")), # v1 for api version 1. (Name for each api route)
path('api-auth/', include('rest_framework.urls')),  # build-in log in/out rest
path("api/v1/dj-rest-auth/", include("dj_rest_auth.urls")), #url for dj_rest_auth
path("api/v1/dj-rest-auth/registration/", include("dj_rest_auth.registration.urls")),
]

我的settings.py代码 #

INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.sites',

#3party
"rest_framework",
"corsheaders",
"rest_framework.authtoken",
"allauth", 
"allauth.account",  
"allauth.socialaccount", 
"dj_rest_auth",
"dj_rest_auth.registration", 

#local
'accounts.apps.AccountsConfig',
'posts.apps.PostsConfig',]

REST_FRAMEWORK = { # new
"DEFAULT_PERMISSION_CLASSES": [
    "rest_framework.permissions.IsAuthenticated",
],
"DEFAULT_AUTHENTICATION_CLASSES": [
    "rest_framework.authentication.SessionAuthentication",
    "rest_framework.authentication.TokenAuthentication",
],}

我对比了作者提供的示例代码，未发现明显差异，怀疑是依赖版本变更导致的该问题，恳请得到帮助。

内容的提问来源于stack exchange，提问作者Dũng Nguyễn Văn