Recent docker error

docker.log

System check identified no issues (0 silenced).
May 18, 2016 - 13:53:23
Django version 1.7.11, using settings 'settings'
Starting development server at http://0.0.0.0:8000/
Quit the server with CONTROL-C.
[18/May/2016 13:53:58] "GET / HTTP/1.0" 302 0
Raven is not configured (logging is disabled). Please see the documentation for more information.
13:54:07 raven.contrib.django.client.DjangoClient:INFO Raven is not configured (logging is disabled). Please see the documentation for more information. :/usr/lib/python2.7/site-packages/raven/base.py:196
Traceback (most recent call last):
  File "/usr/lib64/python2.7/wsgiref/handlers.py", line 85, in run
    self.result = application(self.environ, self.start_response)
  File "/usr/lib/python2.7/site-packages/django/contrib/staticfiles/handlers.py", line 64, in __call__
    return self.application(environ, start_response)
  File "/code/src/olympia/wsgi.py", line 41, in application
    return django_app(env, start_response)
  File "/usr/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 187, in __call__
    response = self.get_response(request)
  File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 199, in get_response
    response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
  File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 111, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/deps/src/django-mobility/mobility/decorators.py", line 49, in wrapper
    return normal_fn(request, *args, **kw)
  File "/code/src/olympia/addons/views.py", line 361, in home
    'src': 'homepage', 'collections': collections})
  File "/usr/lib/python2.7/site-packages/django/shortcuts.py", line 50, in render
    return HttpResponse(loader.render_to_string(*args, **kwargs),
  File "/usr/lib/python2.7/site-packages/django/template/loader.py", line 178, in render_to_string
    return t.render(context_instance)
  File "/usr/lib/python2.7/site-packages/jingo/__init__.py", line 99, in render
    return super(Template, self).render(context_dict)
  File "/usr/lib/python2.7/site-packages/jinja2/environment.py", line 989, in render
    return self.environment.handle_exception(exc_info, True)
  File "/usr/lib/python2.7/site-packages/jinja2/environment.py", line 754, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/code/src/olympia/addons/templates/addons/home.html", line 8, in top-level template code
    {% set view_all = {
  File "/code/src/olympia/../../src/olympia/templates/impala/base_shared.html", line 1, in top-level template code
    {% extends 'impala/base.html' %}
  File "/code/src/olympia/../../src/olympia/templates/impala/base.html", line 24, in top-level template code
    {% block site_css %}
  File "/code/src/olympia/../../src/olympia/templates/impala/base.html", line 25, in block "site_css"
    {{ css('zamboni/impala') }}
  File "/deps/src/jingo-minify/jingo_minify/helpers.py", line 153, in css
    urls = get_css_urls(bundle, debug)
  File "/deps/src/jingo-minify/jingo_minify/helpers.py", line 111, in get_css_urls
    compile_css(item)
  File "/deps/src/jingo-minify/jingo_minify/helpers.py", line 215, in compile_css
    subprocess.Popen([settings.LESS_BIN, path_src], stdout=output)
  File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__
    errread, errwrite)
  File "/usr/lib64/python2.7/subprocess.py", line 1327, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory