ERROR 2019-04-24 03:17:17,604 39912 140271741089536 log.py log log_response 228 Internal Server Error: /accounts/register
Traceback (most recent call last):
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/base.py", line 126, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/base.py", line 124, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/var/www/python-blogs/python-blogs/gsoc/views.py", line 142, in register_view
    user = reglink.create_user(username=username)
  File "/var/www/python-blogs/python-blogs/gsoc/models.py", line 353, in create_user
    api.publish_page(page, su, 'en')
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/cms/api.py", line 424, in publish_page
    if not page.has_publish_permission(user):
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/cms/models/pagemodel.py", line 1527, in has_publish_permission
    return user_can_publish_page(user, page=self)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/cms/utils/permissions.py", line 156, in cached_func
    setattr(user, func_cache_name, cached_func)
AttributeError: 'NoneType' object has no attribute '_djangocms_cached_func_user_can_publish_page'
ERROR 2019-04-24 03:17:17,604 39912 140271741089536 log.py log log_response 228 Internal Server Error: /accounts/register
Traceback (most recent call last):
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/base.py", line 126, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/base.py", line 124, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/var/www/python-blogs/python-blogs/gsoc/views.py", line 142, in register_view
    user = reglink.create_user(username=username)
  File "/var/www/python-blogs/python-blogs/gsoc/models.py", line 353, in create_user
    api.publish_page(page, su, 'en')
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/cms/api.py", line 424, in publish_page
    if not page.has_publish_permission(user):
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/cms/models/pagemodel.py", line 1527, in has_publish_permission
    return user_can_publish_page(user, page=self)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/cms/utils/permissions.py", line 156, in cached_func
    setattr(user, func_cache_name, cached_func)
AttributeError: 'NoneType' object has no attribute '_djangocms_cached_func_user_can_publish_page'
ERROR 2019-04-24 03:19:51,155 41912 139878491977472 log.py log log_response 228 Internal Server Error: /accounts/register
Traceback (most recent call last):
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/base.py", line 126, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/base.py", line 124, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/var/www/python-blogs/python-blogs/gsoc/views.py", line 142, in register_view
    user = reglink.create_user(username=username)
  File "/var/www/python-blogs/python-blogs/gsoc/models.py", line 355, in create_user
    group = Group.objects.get(name='students')
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/db/models/manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/db/models/query.py", line 399, in get
    self.model._meta.object_name
django.contrib.auth.models.Group.DoesNotExist: Group matching query does not exist.
ERROR 2019-04-24 03:19:51,155 41912 139878491977472 log.py log log_response 228 Internal Server Error: /accounts/register
Traceback (most recent call last):
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/base.py", line 126, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/core/handlers/base.py", line 124, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/var/www/python-blogs/python-blogs/gsoc/views.py", line 142, in register_view
    user = reglink.create_user(username=username)
  File "/var/www/python-blogs/python-blogs/gsoc/models.py", line 355, in create_user
    group = Group.objects.get(name='students')
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/db/models/manager.py", line 82, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/var/www/python-blogs/venv/lib64/python3.7/site-packages/django/db/models/query.py", line 399, in get
    self.model._meta.object_name
django.contrib.auth.models.Group.DoesNotExist: Group matching query does not exist.