Uploading artifacts to coordinator... too large archive

Hi,

I have got the following error message during the uploading step of my Gitlab CI for some jobs:

Uploading artifacts...
download.tar.gz: found 1 matching files            
ERROR: Uploading artifacts to coordinator... too large archive  id=184192 responseStatus=413 Request Entity Too Large status=413 Request Entity Too Large token=FHx9PA_-
FATAL: Too large                                   
ERROR: Job failed: exit code 1

The size of the download.tar.gz file is 1.5Gbyte:

-rw-r--r--.   1 poder poder 1.5G Mar  7 10:55 download.tar.gz

I am using the Omnibus Gitlab CE 10.4.4 release. My NGINX client_max_body_size is set to almost 20GByte:

grep client_max_body_size gitlab.rb
nginx['client_max_body_size'] = '20000m'
# mattermost_nginx['client_max_body_size'] = '250m'

The parameter 'Maximum attachment size' in admin/application_settings UE is set to 20000Mbytes too.

Even if the file is unzipped (size: 14Gbytes), the upload issued with the same error message I googled this error message but did not find any other parameter except client_max_body_size.

Is there another parameter to be modified to get this upload successfull ?

Thanks for your help.