Hi,
I got the same error, i try to upload files with ORA2 in my local system 
and i get this error :
Traceback (most recent call last):
  File 
"/edx/app/edxapp/venvs/edxapp/src/ora2/openassessment/xblock/submission_mixin.py",
 
line 245, in upload_url
    url = file_upload_api.get_upload_url(key, content_type)
  File 
"/edx/app/edxapp/venvs/edxapp/src/ora2/openassessment/fileupload/api.py", 
line 14, in get_upload_url
    return backends.get_backend().get_upload_url(key, content_type)
  File 
"/edx/app/edxapp/venvs/edxapp/src/ora2/openassessment/fileupload/backends/s3.py",
 
line 29, in get_upload_url
    raise FileUploadInternalError(ex)
FileUploadInternalError: No handler was ready to authenticate. 1 handlers 
were checked. ['HmacAuthV1Handler'] Check your credentials
I hope some body has a solution.


On Saturday, October 8, 2016 at 12:43:37 AM UTC, Nate Aune wrote:
>
> yeah, and if you look at your LMS log file, it should have an error 
> that looks like this: 
> NoAuthHandlerFound: No handler was ready to authenticate. 1 handlers 
> were checked. ['HmacAuthV1Handler'] Check your credentials}} 
>
> On Tue, Oct 4, 2016 at 9:24 AM, Christos Bellos 
> <christo...@gmail.com <javascript:>> wrote: 
> > Also, I just used the 1 hour demo of the Bitnami OpenEdX for AWS and 
> there 
> > is the same problem... 
> > 
> > It says: 
> > "Unable to upload file" 
> > "Error on retrieving upload URL" 
> > 
> > Do you have the same error message? 
> > 
> > 
> > Τη Τρίτη, 4 Οκτωβρίου 2016 - 7:14:07 μ.μ. UTC+3, ο χρήστης Christos 
> Bellos 
> > έγραψε: 
> >> 
> >> Thanks Nate for your reply. I was worrying that I am the only left that 
> >> did not solve this problem... ;-) 
> >> Hopefully we'll have some help on this. 
> >> 
> >> 
> >> 
> >> 
> >> Τη Τρίτη, 4 Οκτωβρίου 2016 - 3:12:50 π.μ. UTC+3, ο χρήστης Nate Aune 
> >> έγραψε: 
> >>> 
> >>> Hi Christos, 
> >>> 
> >>> I encountered the same problem and reported the issue here 
> >>> (https://openedx.atlassian.net/browse/DEVSTACK-26) but as of yet 
> there has 
> >>> been no response from the edX team. 
> >>> 
> >>> It appears that the ORA2 doesn't honor the global setting 
> >>> DEFAULT_FILE_STORAGE": "django.core.files.storage.FileSystemStorage" 
> >>> But defaults to use Amazon S3, irregardless of what is set for 
> >>> DEFAULT_FILE_STORAGE. 
> >>> 
> >>> Nate 
> >>> 
> >>> 
> >>> On Monday, October 3, 2016 at 4:08:36 AM UTC-7, Christos Bellos wrote: 
> >>>> 
> >>>> I am trying to use the ORA2 and upload files to our server. I think 
> that 
> >>>> we have performed all the recommended steps, but with no success. 
> >>>> 
> >>>> Is it possible to post the steps, sth like a tutorial for dummies? 
> That 
> >>>> would be really really appreciated, because I am following several 
> threads 
> >>>> and performed several recommendations from users with no success. 
> >>>> For example, I have followed these steps: 
> >>>> 
> https://github.com/edx/edx-documentation/blob/master/en_us/install_operations/source/configuration/ora2/ora2_uploads.rst#id6
>  
> >>>> and these: 
> >>>> 
> https://groups.google.com/forum/#!msg/edx-code/L8Ga4RSsa50/t5wM2h-XSNsJ 
> >>>> 
> >>>> 
> >>>> 
> >>>> Τη Τρίτη, 3 Μαΐου 2016 - 1:54:28 μ.μ. UTC+3, ο χρήστης Jay Modi 
> έγραψε: 
> >>>>> 
> >>>>> You need to config below settings: 
> >>>>> 
> >>>>> in lms/common.py: 
> >>>>> 
> >>>>> 
> >>>>> ORA2_FILEUPLOAD_BACKEND = "filesystem" 
> >>>>> # your prefered cache system 
> >>>>> 
> >>>>> ORA2_FILEUPLOAD_CACHE_NAME="default" 
> >>>>> #where you want to upload ora2 files 
> >>>>> 
> >>>>> ORA2_FILEUPLOAD_ROOT = os.path.join(MEDIA_ROOT, 'ora-upload/') 
> >>>>> 
> >>>>> In lms/urls.py: 
> >>>>> 
> >>>>> 
> >>>>> from openassessment.fileupload.urls import urlpatterns as 
> >>>>> oraurlpatterns 
> >>>>> urlpatterns+= oraurlpatterns 
> >>>>> 
> >>>>> Thanks & Regards, 
> >>>>> Jay Modi, 
> >>>>> Python Django developer, 
> >>>>> Quixom Technolgies 
> > 
> > -- 
> > You received this message because you are subscribed to a topic in the 
> > Google Groups "General Open edX discussion" group. 
> > To view this discussion on the web visit 
> > 
> https://groups.google.com/d/msgid/edx-code/e4810158-69fc-4305-bec9-1eb651d3feb3%40googlegroups.com.
>  
>
>
>
>
> -- 
>
>
> Website: http://www.appsembler.com 
> Blog: http://www.appsembler.com/blog 
> Twitter: http://twitter.com/natea 
> LinkedIn: http://linkedin.com/in/natea 
> Phone: +1 (617) 702-4331 
>

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