troubleshooting for FilterError for Pycon/pycon

local.py

# Copy this to local.py and edit.
# Do not add local.py to source control.

# Pick one: import whatever your appropriate settings are for this environment
# (probably ``.dev`` for local development)

from .dev import *
#from .test import *
#from .staging import *
#from .production import *
# etc..

DEBUG = True
TEMPLATE_DEBUG = DEBUG
SERVE_MEDIA = True
COMPRESS = False
COMPRESS_ENABLED = False

# Then you can override settings here if you need to.

# For example, if you're not running a local Postgres with a database
# named ``pycon2014``, you'll need to add your database settings here.

# Uncomment to use Django Debug Toolbar:
INSTALLED_APPS.append('debug_toolbar')
MIDDLEWARE_CLASSES.append('debug_toolbar.middleware.DebugToolbarMiddleware')

missing_site_css

[pycon20131205] [pycon@vegetablegargoyle:~/site/pycon:develop(*)]$ vi pycon/settings/base.py
[pycon20131205] [pycon@vegetablegargoyle:~/site/pycon:develop(*)]$ ./build-css.sh 
./build-css.sh: line 1: symposion/static/css/site.css: No such file or directory
[pycon20131205] [pycon@vegetablegargoyle:~/site/pycon:develop(*)]$ ff site.css

traceback

Environment:


Request Method: GET
Request URL: http://vegetablegargoyle.com:8000/2014/

Django Version: 1.5.4
Python Version: 2.7.5
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.humanize',
 'pinax_theme_bootstrap',
 'django_forms_bootstrap',
 'compressor',
 'mailer',
 'django_openid',
 'timezones',
 'metron',
 'easy_thumbnails',
 'account',
 'sitetree',
 'taggit',
 'reversion',
 'biblion',
 'social_auth',
 'djangosecure',
 'raven.contrib.django',
 'constance',
 'constance.backends.database',
 'redis_cache',
 'south',
 'uni_form',
 'gunicorn',
 'selectable',
 'symposion.conference',
 'symposion.cms',
 'symposion.boxes',
 'symposion.speakers',
 'symposion.proposals',
 'symposion.reviews',
 'symposion.teams',
 'symposion.schedule',
 'markedit',
 'pycon',
 'pycon.sponsorship',
 'pycon.registration',
 'pycon.schedule',
 'pycon.profile',
 'pycon.finaid',
 'pycon.pycon_api',
 'pycon.tutorials',
 'debug_toolbar']
Installed Middleware:
['djangosecure.middleware.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.locale.LocaleMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django_openid.consumer.SessionConsumer',
 'django.contrib.messages.middleware.MessageMiddleware',
 'reversion.middleware.RevisionMiddleware',
 'social_auth.middleware.SocialAuthExceptionMiddleware',
 'debug_toolbar.middleware.DebugToolbarMiddleware']


Template error:
In template /home/pycon/site/pycon/pycon/templates/responsive_base.html, error at line 15
   
module.js:340
    throw err;
          ^
Error: Cannot find module 'less'
    at Function.Module._resolveFilename (module.js:338:15)
    at Function.Module._load (module.js:280:25)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.<anonymous> (/usr/bin/lessc:9:12)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)

   5 : 


   6 : {% block style_base %}


   7 :     {% compress css %}


   8 :         <link href="{% static "pinax/css/theme.css" %}" rel="stylesheet" type="text/css">


   9 :     {% endcompress %}


   10 : 


   11 :     {% if debug %}


   12 :         <link rel="stylesheet/less" type="text/css" media="all" href="{{ STATIC_URL }}less/responsive-site.less" />


   13 :         <script src="{{ STATIC_URL }}js/less-1.3.3.min.js"></script>


   14 :     {% else %}


   15 :          {% compress css %} 


   16 :             <link rel="stylesheet" type="text/less" media="all" href="{{ STATIC_URL }}less/responsive-site.less" />


   17 :         {% endcompress %}


   18 :     {% endif %}


   19 : 


   20 :     {% compress css %}


   21 :         {% include "markedit/includes/markedit-css.html" %}


   22 :     {% endcompress %}


   23 : 


   24 :     {% block extra_style %}{% endblock %}


   25 : {% endblock %}


Traceback:
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  140.                     response = response.render()
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/response.py" in render
  105.             self.content = self.rendered_content
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/response.py" in rendered_content
  82.         content = template.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in render
  140.             return self._render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in render
  830.                 bit = self.render_node(node, context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  124.         return compiled_parent._render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in render
  830.                 bit = self.render_node(node, context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  124.         return compiled_parent._render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in render
  830.                 bit = self.render_node(node, context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  124.         return compiled_parent._render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in render
  830.                 bit = self.render_node(node, context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  124.         return compiled_parent._render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in render
  830.                 bit = self.render_node(node, context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  63.             result = block.nodelist.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in render
  830.                 bit = self.render_node(node, context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render
  285.                 return nodelist.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/base.py" in render
  830.                 bit = self.render_node(node, context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/templatetags/compress.py" in render
  147.         return self.render_compressed(context, self.kind, self.mode, forced=forced)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/templatetags/compress.py" in render_compressed
  107.             rendered_output = self.render_output(compressor, mode, forced=forced)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/templatetags/compress.py" in render_output
  119.         return compressor.output(mode, forced=forced)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/css.py" in output
  51.                     ret.append(subnode.output(*args, **kwargs))
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/css.py" in output
  53.         return super(CssCompressor, self).output(*args, **kwargs)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/base.py" in output
  246.         content = self.filter_input(forced)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/base.py" in filter_input
  194.         for hunk in self.hunks(forced):
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/base.py" in hunks
  169.                 precompiled, value = self.precompile(value, **options)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/base.py" in precompile
  217.                                 **kwargs)
File "/home/pycon/venvs/pycon20131205/local/lib/python2.7/site-packages/compressor/filters/base.py" in input
  131.                 raise FilterError(err)

Exception Type: FilterError at /2014/
Exception Value: 
module.js:340
    throw err;
          ^
Error: Cannot find module 'less'
    at Function.Module._resolveFilename (module.js:338:15)
    at Function.Module._load (module.js:280:25)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.<anonymous> (/usr/bin/lessc:9:12)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)

Try:
sudo npm install less-loader --global
sudo npm install less --global