Trying to push my app to heroku gives me this error FileNotFoundError: [Errno 2] No such file or directory: '/app/gettingstarted/media'

Question

While trying to push my app I get the follwing error

FileNotFoundError: [Errno 2] No such file or directory: '/app/gettingstarted/media'

But it does exist which confuses me.My file structure that leads to it is this

src/gettingstarted/media

Media is an empty directory. My pushes were working just last night. Heres the result of me running git push heroku master

Counting objects: 13, done.
    Delta compression using up to 4 threads.
    Compressing objects: 100% (12/12), done.
    Writing objects: 100% (13/13), 670.50 KiB | 0 bytes/s, done.
    Total 13 (delta 9), reused 0 (delta 0)
    remote: Compressing source files... done.
    remote: Building source:
    remote: 
    remote: -----> Using set buildpack heroku/python
    remote: -----> Python app detected
    remote:      $ pip install -r requirements.txt
    remote: 
    remote:      $ python manage.py collectstatic --noinput
    remote:        Traceback (most recent call last):
    remote:          File "manage.py", line 10, in <module>
    remote:            execute_from_command_line(sys.argv)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
    remote:            utility.execute()
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 345, in execute
    remote:            self.fetch_command(subcommand).run_from_argv(self.argv)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 348, in run_from_argv
    remote:            self.execute(*args, **cmd_options)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 399, in execute
    remote:            output = self.handle(*args, **options)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 176, in handle
    remote:            collected = self.collect()
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 98, in collect
    remote:            for path, storage in finder.list(self.ignore_patterns):
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/contrib/staticfiles/finders.py", line 112, in list
    remote:            for path in utils.get_files(storage, ignore_patterns):
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/contrib/staticfiles/utils.py", line 28, in get_files
    remote:            directories, files = storage.listdir(location)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/files/storage.py", line 299, in listdir
    remote:            for entry in os.listdir(path):
    remote:        FileNotFoundError: [Errno 2] No such file or directory: '/app/gettingstarted/media'
    remote: 
    remote:  !     Error while running '$ python manage.py collectstatic --noinput'.
    remote:        See traceback above for details.
    remote: 
    remote:        You may need to update application code to resolve this error.
    remote:        Or, you can disable collectstatic for this application:
    remote: 
    remote:           $ heroku config:set DISABLE_COLLECTSTATIC=1
    remote: 
    remote:        https://devcenter.heroku.com/articles/django-assets
    remote: 
    remote:  !     Push rejected, failed to compile Python app
    remote: 
    remote: Verifying deploy...
    remote: 
    remote: !       Push rejected to hispanicheights.
    remote: 
    To https://git.heroku.com/hispanicheights.git
     ! [remote rejected] master -> master (pre-receive hook declined)
    error: failed to push some refs to 'https://git.heroku.com/hispanicheights.git'

after reading a post on here I ran this

 heroku config:set DEBUG_COLLECTSTATIC=1

and got the following output

        Setting config vars and restarting hispanicheights... done
    DEBUG_COLLECTSTATIC: 1
    (practice) apples-MacBook-Pro:src ray$ git push heroku master
    Counting objects: 13, done.
    Delta compression using up to 4 threads.
    Compressing objects: 100% (12/12), done.
    Writing objects: 100% (13/13), 670.50 KiB | 0 bytes/s, done.
    Total 13 (delta 9), reused 0 (delta 0)
    remote: Compressing source files... done.
    remote: Building source:
    remote: 
    remote: -----> Using set buildpack heroku/python
    remote: -----> Python app detected
    remote:      $ pip install -r requirements.txt
    remote: 
    remote:      $ python manage.py collectstatic --noinput
    remote:        Traceback (most recent call last):
    remote:          File "manage.py", line 10, in <module>
    remote:            execute_from_command_line(sys.argv)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
    remote:            utility.execute()
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/__init__.py", line 345, in execute
    remote:            self.fetch_command(subcommand).run_from_argv(self.argv)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 348, in run_from_argv
    remote:            self.execute(*args, **cmd_options)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/management/base.py", line 399, in execute
    remote:            output = self.handle(*args, **options)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 176, in handle
    remote:            collected = self.collect()
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py", line 98, in collect
    remote:            for path, storage in finder.list(self.ignore_patterns):
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/contrib/staticfiles/finders.py", line 112, in list
    remote:            for path in utils.get_files(storage, ignore_patterns):
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/contrib/staticfiles/utils.py", line 28, in get_files
    remote:            directories, files = storage.listdir(location)
    remote:          File "/app/.heroku/python/lib/python3.5/site-packages/django/core/files/storage.py", line 299, in listdir
    remote:            for entry in os.listdir(path):
    remote:        FileNotFoundError: [Errno 2] No such file or directory: '/app/gettingstarted/media'
    remote: 
    remote:  !     Error while running '$ python manage.py collectstatic --noinput'.
    remote:        See traceback above for details.
    remote: 
    remote:        You may need to update application code to resolve this error.
    remote:        Or, you can disable collectstatic for this application:
    remote: 
    remote:           $ heroku config:set DISABLE_COLLECTSTATIC=1
    remote: 
    remote:        https://devcenter.heroku.com/articles/django-assets
    remote: 
    remote: ****** Collectstatic environment variables:
    remote: 
    remote:        CPLUS_INCLUDE_PATH=/app/.heroku/vendor/include:/app/.heroku/vendor/include:/app/.heroku/python/include:
    remote:        SOURCE_VERSION=68adc8ed3bbefc420568ec683846e0c2c2a51908
    remote:        PROFILE_PATH=/app/.profile.d/python.sh
    remote:        DEBUG_COLLECTSTATIC=1
    remote:        LIBRARY_PATH=/app/.heroku/vendor/lib:/app/.heroku/vendor/lib:/app/.heroku/python/lib:
    remote:        CACHE_DIR=/app/tmp/cache
    remote:        PYTHONUNBUFFERED=1
    remote:        PYHONHOME=/app/.heroku/python
    remote:        LD_LIBRARY_PATH=/app/.heroku/vendor/lib:/app/.heroku/vendor/lib:/app/.heroku/python/lib:
    remote:        BIN_DIR=/app/tmp/buildpacks/python/bin
    remote:        PATH=/app/.heroku/python/bin:/app/.heroku/vendor/bin::/usr/local/bin:/app/bin:/app/vendor/bundle/bin:/app/vendor/bundle/ruby/2.3.0/bin:/usr/local/bin:/usr/bin:/bin:/tmp/codon/vendor/bin:/app/tmp/buildpacks/python/vendor/bpwatch:/app/tmp/buildpacks/python/vendor/pip-pop
    remote:        RECOMMENDED_PYTHON_VERSION=python-2.7.11
    remote:        C_INCLUDE_PATH=/app/.heroku/vendor/include:/app/.heroku/vendor/include:/app/.heroku/python/include:
    remote:        PWD=/app
    remote:        LOG_FILE=/tmp/fifo20160406-3-8wj7yc
    remote:        LANG=en_US.UTF-8
    remote:        STACK=cedar-14
    remote:        TIMES=2
    remote:        SHLVL=3
    remote:        REQUEST_ID=327705f8-1028-4375-912a-f6abb15a9cb4
    remote:        HOME=/app
    remote:        BPWATCH_STORE_PATH=/app/tmp/cache/bpwatch.json
    remote:        PYTHONPATH=/app/
    remote:        BUILD_DIR=/app
    remote:        WARNINGS_LOG=/tmp/tmp.EFU8JTKPZD
    remote:        USER_LOG_FILE=/tmp/fifo20160406-3-12ib9mh
    remote:        PKG_CONFIG_PATH=/app/.heroku/vendor/lib/pkgconfig:/app/.heroku/vendor/lib/pkgconfig:/app/.heroku/vendor/lib/pkg-config:/app/.heroku/vendor/lib/pkg-config:/app/.heroku/python/lib/pkg-config:
    remote:        DATABASE_URL=postgres://vzeteghnhlwrjq:OABELzntZhcJwAIaqTlsI-mwWl@ec2-54-235-93-178.compute-1.amazonaws.com:5432/d230us01stas97
    remote:        _=/usr/bin/env
    remote: 
    remote:  !     Push rejected, failed to compile Python app
    remote: 
    remote: Verifying deploy...
    remote: 
    remote: !       Push rejected to hispanicheights.
    remote: 
    To https://git.heroku.com/hispanicheights.git
     ! [remote rejected] master -> master (pre-receive hook declined)
    error: failed to push some refs to 'https://git.heroku.com/hispanicheights.git'

not really sure what's going on as I'm about 4 months in to django. Any help or guidance would be appreciated

not sure if whitenoise is causing this. I doubt it. But heres my settings.py file

    MIDDLEWARE_CLASSES = (
        'django.contrib.sessions.middleware.SessionMiddleware',
        'django.middleware.common.CommonMiddleware',
        'django.middleware.csrf.CsrfViewMiddleware',
        'django.contrib.auth.middleware.AuthenticationMiddleware',
        'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
        'django.contrib.messages.middleware.MessageMiddleware',
        'django.middleware.clickjacking.XFrameOptionsMiddleware',
        'django.middleware.security.SecurityMiddleware',
        'whitenoise.middleware.WhiteNoiseMiddleware',
    )

    ROOT_URLCONF = 'gettingstarted.urls'


        STATIC_ROOT = os.path.join(PROJECT_ROOT, 'staticfiles')
    STATIC_URL = '/static/'

    MEDIA_ROOT = os.path.join(PROJECT_ROOT, 'media_cdn')
    MEDIA_URL = '/media/'

    # Extra places for collectstatic to find static files.
    STATICFILES_DIRS = (
        os.path.join(PROJECT_ROOT, 'static'),
        os.path.join(PROJECT_ROOT, 'media'),
    )

    # Simplified static file serving.
    # https://warehouse.python.org/project/whitenoise/
    STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage'

my gettingstarted/urls.py

        urlpatterns = [
        url(r'^admin/', include(admin.site.urls)),
        url(r'^blog/', include('hello.urls', namespace='blog', app_name='blog')),
        url(r'^db', hello.views.db, name='db'),
        url(r'^', include('hello.urls')), # hello corresponds to the hello module in installed apps
    ]

    if settings.DEBUG:
        urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
        urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

Answer 1

I think the issue here is that git doesn't track empty directories, they need to contain at least one file for git to "see" them, so although your media directory exists locally it doesn't exist on Heroku. A common way of handling this is to create an empty file called .keep in the directory.