Error with special characters in Text of the Privacy Policy link

[agitator]

for example "Protection des données"

version 0.3.0 with Plone 5.1.2

UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 19: ordinal not in range(128)

 - Expression: "view/json_data"
 - Filename:   ... -py2.7.egg/collective/jsconfiguration/browser/viewlet.pt
 - Location:   (line 10: col 30)
 - Source:     tal:repeat="json_data view/json_data"
                                     ^^^^^^^^^^^^^^
 - Arguments:  repeat: {...} (0)
               template: <ViewPageTemplateFile - at 0x7fa95fc51150>
               views: <ViewMapper - at 0x7fa94ffbec50>
               modules: <instance - at 0x7fa9862f0098>
               args: <tuple - at 0x7fa98f156050>
               here: <ImplicitAcquisitionWrapper Plone at 0x7fa95ea31050>
               user: <ImplicitAcquisitionWrapper - at 0x7fa95c120460>
               nothing: <NoneType - at 0x8fe4d0>
               container: <ImplicitAcquisitionWrapper Plone at 0x7fa95ea31050>
               request: <instance - at 0x7fa94ff42ea8>
               wrapped_repeat: <SafeMapping - at 0x7fa94fe5ed08>
               traverse_subpath: <list - at 0x7fa94fe69a28>
               default: <object - at 0x7fa98f071570>
               loop: {...} (1)
               context: <ImplicitAcquisitionWrapper Plone at 0x7fa95ea31050>
               view: <SimpleViewletClass from /home/plone/buildout/eggs/collective.jsconfiguration-0.1.1-py2.7.egg/collective/jsconfiguration/browser/viewlet.pt collective.jsconfiguration at 0x7fa954081550>
               translate: <function translate at 0x7fa94fe6aa28>
               root: <ImplicitAcquisitionWrapper Zope at 0x7fa954e7cfa0>
               options: {...} (0)
               target_language: <NoneType - at 0x8fe4d0>
(12 additional frame(s) were not displayed)
...
  File "home/plone/buildout/eggs/collective.jsconfiguration-0.1.1-py2.7.egg/collective/jsconfiguration/browser/viewlet.py", line 38, in json_data
    'data': json.dumps(provider())})
  File "rer/cookieconsent/jsconfiguration/configuration.py", line 28, in __call__
    data_settings = IJSONifier(settings).json()
  File "home/plone/buildout/eggs/collective.regjsonify-0.2.0-py2.7.egg/collective/regjsonify/jsonify.py", line 33, in json
    result[name] = field_data.data(settings)
  File "home/plone/buildout/eggs/collective.regjsonify-0.2.0-py2.7.egg/collective/regjsonify/fields.py", line 44, in data
    result.append(subfield_data.data(x))
  File "rer/cookieconsent/jsconfiguration/fields_adapter.py", line 50, in data
    r'\2'),