'collectstatic' command fails when WhiteNoise is enabled

Question

I'm trying to serve static files through WhiteNoise as per Heroku's recommendation. When I run collectstatic in my development environment, this happens:

Post-processing 'css/iconic/open-iconic-bootstrap.css' failed!  Traceback (most recent call last):   File "./manage.py", line 10, in <module>     execute_from_command_line(sys.argv)   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line     utility.execute()   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/core/management/__init__.py", line 377, in execute     self.fetch_command(subcommand).run_from_argv(self.argv)   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/core/management/base.py", line 288, in run_from_argv     self.execute(*args, **options.__dict__)   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/core/management/base.py", line 338, in execute     output = self.handle(*args, **options)   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/core/management/base.py", line 533, in handle     return self.handle_noargs(**options)   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 168, in handle_noargs     collected = self.collect()   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 120, in collect     raise processed   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/contrib/staticfiles/storage.py", line 242, in post_process     content = pattern.sub(converter, content)   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/contrib/staticfiles/storage.py", line 181, in converter     hashed_url = self.url(unquote(joined_result), force=True)   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/contrib/staticfiles/storage.py", line 128, in url     hashed_name = self.stored_name(clean_name)   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/contrib/staticfiles/storage.py", line 277, in stored_name     cache_name = self.clean_name(self.hashed_name(name))   File "/home/Pieter/.virtualenvs/radiant/lib/python3.4/site-packages/django/contrib/staticfiles/storage.py", line 91, in hashed_name     (clean_name, self)) ValueError: The file 'css/fonts/open-iconic.eot' could not be found with <whitenoise.django.GzipManifestStaticFilesStorage object at 0x7f57fc5b1550>. 

The static collection command runs without incident when I comment out this line in my settings:

STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage' 

What's going wrong here and how do I fix it? I already tried emptying my static file output folder. It runs smoothly until it starts processing one specific file.

Answer 1

The problem here is that css/iconic/open-iconic-bootstrap.css is referencing a file, open-iconic.eot, which doesn't exist in the expected location.

When you run collectstatic with that storage backend Django attempts to rewrite all the URLs in your CSS files so they reference the files by their new names e.g, css/iconic/open-iconic.8a7442ca6bed.eot. If it can't find the file it stops with that error.

Answer 2

I just had this same issue and fixed it by removing this line from my settings file,

STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage' 

I got this line from the Heroku documentation page...