I solved my problem,
the problem occured with mezzanine 4.1 and django 1.8, for resolve it i 
change the django and mezzanine  version to 4.0.1 and 1.8  for Django, it's 
work

Le vendredi 5 février 2016 11:27:14 UTC+1, Cajoline a écrit :
>
> Hi,
>
> I have a error 500 in NGNIX serveur (not in local), when i click the link 
> button Tinymce, i paste my traceback:
>
> any idea ? i use Mezzanine 4.1 and Django 1.9
>
> Thank you !
>
> Traceback
>
>
> Traceback (most recent call last):
>
>   File 
> "/home/cajoline/.virtualenvs/meca_escartin/lib/python3.4/site-packages/django/core/handlers/base.py"
> , line 149, in get_response
>
>     response = self.process_exception_by_middleware(e, request)
>
>   File 
> "/home/cajoline/.virtualenvs/meca_escartin/lib/python3.4/site-packages/django/core/handlers/base.py"
> , line 147, in get_response
>
>     response = wrapped_callback(request, *callback_args, **callback_kwargs
> )
>
>   File 
> "/home/cajoline/.virtualenvs/meca_escartin/lib/python3.4/site-packages/mezzanine/core/views.py"
> , line 192, in displayable_links_js
>
>     for url, obj in Displayable.objects.url_map(for_user=request.user).
> items():
>
>   File 
> "/home/cajoline/.virtualenvs/meca_escartin/lib/python3.4/site-packages/mezzanine/core/managers.py"
> , line 366, in url_map
>
>     home = self.model(title=_("Home"))
>
>   File 
> "/home/cajoline/.virtualenvs/meca_escartin/lib/python3.4/site-packages/django/db/models/base.py"
> , line 408, in __init__
>
>     val = field.get_default()
>
>   File 
> "/home/cajoline/.virtualenvs/meca_escartin/lib/python3.4/site-packages/django/db/models/fields/related.py"
> , line 906, in get_default
>
>     if isinstance(field_default, self.remote_field.model):
>
> TypeError: isinstance() arg 2 must be a type or tuple of types
>
>
>
>
>

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