Getting "The file could not be found" when using S3ManifestStaticStorage

[dalpii]

Hello guys, I hope someone can help me. I've implemented the default storages.backends.s3.S3Storage for uploads and static files, and it went just fine.

Now I'm trying to setup static files to use storages.backends.s3.S3ManifestStaticStorage and I'm getting an error when running with DEBUG = False, on production:

ValueError: The file 'admin/css/widgets.css' could not be found with <storages.backends.s3.S3ManifestStaticStorage object at 0x750f4d2ba750>.

As you can see, it doesn't seem to be able to find a CSS file from Django admin, but checking my bucket, the file is there:

And my bucket policy, which was working just fine with S3Storage:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": "*",
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::bucket-name/*"
        }
    ]
}

I've tried some approaches/tests with no success, maybe it's some race condition?

Thanks!

[dalpii]

Maybe not a race condition because running the command again, without deleting any file from S3, gives the same error.

All files are inside admin/css/:

[lchojnacki]

I encountered very similar problem in my project (ValueError: The file 'admin/img/sorting-icons.svg' could not be found with <my.custom.storage.Class(S3ManifestStaticStorage)>.). Downgrading django-storages to version 1.14.2 helped.

[temi4]

Hello.

Problem after the update, because the logic of the self.file_overwrite parameter in the function "exists" has changed

django-storages/storages/backends/s3.py

Line 582 in 9ea35e1

if self.file_overwrite:

def exists(self, name):
if self.file_overwrite: <!-- add this
return False

And this function is used in HashedFilesMixin
https://github.com/django/django/blob/a57596e443ecb67140e1a9fc0f0e87446b2d0174/django/contrib/staticfiles/storage.py#L142

I used file_overwrite for my static files. Perhaps this shouldn't be done?

[dalpii]

I'm closing this issue because this error is caused by #1430.
As @lchojnacki and @temi4 pointed out, downgrading or changing the exists function on storage works for now.