关于django：’WizardStep2Form’没有名为’language_code’的字段。在Djangocms aldryn_newsblog中

'WizardStep2Form' has no field named 'language_code'. in Djangocms aldryn_newsblog

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

1 2	ValueError at /cms_wizard/create/ 'WizardStep2Form' has no field named 'language_code'.

这是我的settings.py文件INSTALLED_APPS

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# 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

1	Traceback:

在get_response中输入文件"/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py"
132. response = wrapped_callback(request，* callback_args，** callback_kwargs)
文件"/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py"在视图中
71. return self.dispatch(request，* args，** kwargs)
内部的文件"/usr/local/lib/python2.7/dist-packages/django/utils/decorators.py"
145. return func(* args，** kwargs)
发送文件"/usr/local/lib/python2.7/dist-packages/cms/wizards/views.py"
38.请求，* args，** kwargs)
发送文件"/usr/local/lib/python2.7/dist-packages/formtools/wizard/views.py"
237. response = super(WizardView，self).dispatch(request，* args，** kwargs)
发送文件"/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py"
89.返回处理程序(request，* args，** kwargs)
在帖子中记录"/usr/local/lib/python2.7/dist-packages/formtools/wizard/views.py"
290.如果form.is_valid()：
is_valid中的文件"/usr/local/lib/python2.7/dist-packages/django/forms/forms.py"
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()
在full_clean中输入文件"/usr/local/lib/python2.7/dist-packages/django/forms/forms.py"
394. self._post_clean()
_post_clean中的文件"/usr/local/lib/python2.7/dist-packages/parler/forms.py"
83. self.save_translated_fields()
在save_translated_fields中输入文件"/usr/local/lib/python2.7/dist-packages/parler/forms.py"
110. self._clean_translation_model(translation_model，exclude)
_clean_translation_model中的文件"/usr/local/lib/python2.7/dist-packages/parler/forms.py"
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(无，错误)
add_error中的文件"/usr/local/lib/python2.7/dist-packages/django/forms/forms.py"
360."'％s'没有名为'％s'的字段。" ％(self.class.name，field))

异常类型：ValueError at / cms_wizard / create /
异常值：'WizardStep2Form'没有名为'language_code'的字段。

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