Looks like we have some kind of translation error in Spanish. While it works correctly in English, setting interface language to Spanish and attempting to apply to https://wikipedialibrary.wmflabs.org/partners/26/ produces a server error. Looks like it's to do with the string <a href="{url}">url</a>.
Traceback: File "/venv/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner 41. response = get_response(request) File "/venv/lib/python2.7/site-packages/django/core/handlers/base.py" in _legacy_get_response 249. response = self._get_response(request) File "/venv/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response 187. response = self.process_exception_by_middleware(e, request) File "/venv/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response 185. response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/venv/lib/python2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view 23. return view_func(request, *args, **kwargs) File "/venv/lib/python2.7/site-packages/django/views/generic/base.py" in view 68. return self.dispatch(request, *args, **kwargs) File "/app/TWLight/applications/views.py" in dispatch 394. request, *args, **kwargs) File "/app/TWLight/view_mixins.py" in dispatch 208. request, *args, **kwargs) File "/app/TWLight/view_mixins.py" in dispatch 281. request, *args, **kwargs) File "/app/TWLight/view_mixins.py" in dispatch 312. request, *args, **kwargs) File "/app/TWLight/view_mixins.py" in dispatch 333. request, *args, **kwargs) File "/venv/lib/python2.7/site-packages/django/views/generic/base.py" in dispatch 88. return handler(request, *args, **kwargs) File "/venv/lib/python2.7/site-packages/django/views/generic/edit.py" in get 174. return self.render_to_response(self.get_context_data()) File "/venv/lib/python2.7/site-packages/django/views/generic/edit.py" in get_context_data 93. kwargs['form'] = self.get_form() File "/app/TWLight/applications/views.py" in get_form 224. return form_class(**kwargs) File "/app/TWLight/applications/forms.py" in __init__ 94. self._add_partner_data_subform(partner) File "/app/TWLight/applications/forms.py" in _add_partner_data_subform 246. url=partner_object.registration_url) Exception Type: KeyError at /applications/apply/26/ Exception Value: u'<a href="{url}">url</a>'