'Hook for rendering a template if a hash check failed.
step is the step that failed. Any previous step is guaranteed to be
valid.
This default implementation simply renders the form for the given step,
but subclasses may want to display an error message, etc.'

def render_hash_failure(self, request, step):

    return self.render(self.get_form(step), request, step, context={'wizard_error': _('We    apologize,    but    your    form    has    expired.    Please    continue    filling    out    the    form    from    this    page.')})
