'WizardStep2Form'没有名为'language_code'的字段 . 在Djangocms aldryn_newsblog中

我已经成功安装了aldryn_newsblog . 我正在使用djangocms . 每次我尝试创建一个新的新闻/博客文章 . 我收到一个错误

ValueError at /cms_wizard/create/
'WizardStep2Form' has no field named 'language_code'.

这是我的settings.py文件INSTALLED_APPS

#  Aldryn News & Blog
'aldryn_apphooks_config',
'aldryn_boilerplates',
'aldryn_categories',
'aldryn_common',
'aldryn_newsblog',
'aldryn_people',
'aldryn_reversion',
'aldryn_translation_tools',
#'djangocms_text_ckeditor',
#'easy_thumbnails',
#'filer',
'parler',
#'reversion',
'sortedm2m',
'taggit',
'absolute',
'aldryn_forms',
'aldryn_forms.contrib.email_notifications',
'captcha',
'emailit',
#  Aldryn News & Blog

这是完整的追溯

Traceback:

文件"/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py"在get_response 132. response = wrapped_callback（request，* callback_args，** callback_kwargs）文件"/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py"在视图71中 . 返回self.dispatch（request，* args，** kwargs）文件"/usr/local/lib/python2.7/dist-packages/django/utils/decorators.py"在内部145. return func（* args ，** kwargs）文件"/usr/local/lib/python2.7/dist-packages/cms/wizards/views.py"在发送38.请求，* args，** kwargs）文件"/usr/local/lib/python2.7/dist-packages/formtools/wizard/views.py"在发送237.响应=超级（WizardView，自我）.dispatch（请求，* args，** kwargs）文件"/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py"在发送89.返回处理程序（request，* args，** kwargs）文件"/usr/local/lib/python2.7/dist-packages/formtools/wizard/views.py"在帖子290中 . 如果form.is_valid（）：文件"/usr/local/lib/python2.7/dist-packages/django/forms/forms.py"在is_valid 184.返回self.is_bound而不是self.errors文件"/usr/local/lib/python2.7/dist-packages/django/forms/forms.py"错误176. self . full_clean（）文件"/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in full_clean 394. self._post_clean（）文件"/usr/local/lib/python2.7/dist-packages/parler/forms.py" in _post_clean 83. self.save_translated_fields（）文件"/usr/local/lib/python2.7/dist-packages/parler/forms.py" in save_translated_fields 110. self._clean_translation_model（translation_model，exclude）文件"/usr/local/lib/python2.7/dist-packages/parler/forms.py" in _clean_translation_model 125. self._update_errors（e ）_update_errors中的文件"/usr/local/lib/python2.7/dist-packages/django/forms/models.py" 402. self.add_error（N一，错误）文件"/usr/local/lib/python2.7/dist-packages/django/forms/forms.py"在add_error 360. "'%s' has no field named '%s'."％（自我 . class . name ，字段））

异常类型：ValueError at / cms_wizard / create / Exception值：'WizardStep2Form'没有名为'language_code'的字段 .

请帮助