Traceback (most recent call last):
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 101, in get_format
    cached = _format_cache[cache_key]
KeyError: ('Y', None)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/core/handlers/base.py", line 131, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/irina/GSDW/projects_dev_3.4/sitebuilder/sitebuilder/views.py", line 29, in page
    return render(request,'page.html', context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/shortcuts.py", line 62, in render
    content = loader.render_to_string(template_name, context, request=request)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/loader.py", line 97, in render_to_string
    return template.render(context, request)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/backends/django.py", line 83, in render
    return self.template.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 211, in render
    return self._render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 199, in _render
    return self.nodelist.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 905, in render
    bit = self.render_node(node, context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/debug.py", line 80, in render_node
    return node.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/loader_tags.py", line 129, in render
    return compiled_parent._render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 199, in _render
    return self.nodelist.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 905, in render
    bit = self.render_node(node, context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/debug.py", line 80, in render_node
    return node.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/loader_tags.py", line 63, in render
    result = block.nodelist.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 905, in render
    bit = self.render_node(node, context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/debug.py", line 80, in render_node
    return node.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/loader_tags.py", line 153, in render
    return template.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 211, in render
    return self._render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 199, in _render
    return self.nodelist.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 905, in render
    bit = self.render_node(node, context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/debug.py", line 80, in render_node
    return node.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/defaulttags.py", line 428, in render
    formatted = date(datetime.now(tz=tzinfo), self.format_string)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/defaultfilters.py", line 770, in date
    return formats.date_format(value, arg)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 134, in date_format
    return dateformat.format(value, get_format(format or 'DATE_FORMAT', use_l10n=use_l10n))
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 108, in get_format
    for module in get_format_modules(lang):
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 80, in get_format_modules
    modules = _format_modules_cache.setdefault(lang, list(iter_format_modules(lang, settings.FORMAT_MODULE_PATH)))
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 49, in iter_format_modules
    if not check_for_language(lang):
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/translation/__init__.py", line 181, in check_for_language
    return _trans.check_for_language(lang_code)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/functools.py", line 452, in wrapper
    result = user_function(*args, **kwds)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/translation/trans_real.py", line 408, in check_for_language
    if not language_code_re.search(lang_code):
TypeError: expected string or buffer

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 101, in get_format
    cached = _format_cache[cache_key]
KeyError: ('r', None)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
    utility.execute()
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/core/management/__init__.py", line 330, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/core/management/base.py", line 390, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/core/management/base.py", line 441, in execute
    output = self.handle(*args, **options)
  File "/home/irina/GSDW/projects_dev_3.4/sitebuilder/sitebuilder/management/commands/build.py", line 42, in handle
    response = client.get(url)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/test/client.py", line 499, in get
    **extra)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/test/client.py", line 302, in get
    return self.generic('GET', path, secure=secure, **r)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/test/client.py", line 378, in generic
    return self.request(**r)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/test/client.py", line 447, in request
    response = self.handler(environ)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/test/client.py", line 121, in __call__
    response = self.get_response(request)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/core/handlers/base.py", line 217, in get_response
    response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/core/handlers/base.py", line 260, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/views/debug.py", line 100, in technical_500_response
    html = reporter.get_traceback_html()
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/views/debug.py", line 383, in get_traceback_html
    return t.render(c)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 211, in render
    return self._render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 199, in _render
    return self.nodelist.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 905, in render
    bit = self.render_node(node, context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/debug.py", line 80, in render_node
    return node.render(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/debug.py", line 90, in render
    output = self.filter_expression.resolve(context)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/base.py", line 676, in resolve
    new_obj = func(obj, *arg_vals)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/template/defaultfilters.py", line 770, in date
    return formats.date_format(value, arg)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 134, in date_format
    return dateformat.format(value, get_format(format or 'DATE_FORMAT', use_l10n=use_l10n))
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 108, in get_format
    for module in get_format_modules(lang):
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 80, in get_format_modules
    modules = _format_modules_cache.setdefault(lang, list(iter_format_modules(lang, settings.FORMAT_MODULE_PATH)))
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/formats.py", line 49, in iter_format_modules
    if not check_for_language(lang):
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/translation/__init__.py", line 181, in check_for_language
    return _trans.check_for_language(lang_code)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/functools.py", line 452, in wrapper
    result = user_function(*args, **kwds)
  File "/home/irina/GSDW/lissa3.4/lib/python3.4/site-packages/django/utils/translation/trans_real.py", line 408, in check_for_language
    if not language_code_re.search(lang_code):
TypeError: expected string or buffer