Problem with sharing files

I am unable to share any file. When share option is clicked then side panel is showing on the right side of page and under Sharing tab loading circle is spinning forever.

Steps to reproduce
1.Just installed version 9.1 (previously version 9.0.2) from tarball
2. I was trying to share one of my file but the loading circle is going to spin forever

Expected behaviour
Showing sharing options and finally allowing to share file/files

Actual behaviour
Not showing sharing options

Server configuration
Operating system: Lubuntu 16.04.01
Web server: nginx 1.10
Database: postgres 9.5
PHP version: 7.0
ownCloud version (see ownCloud admin page): 9.1
Updated from an older ownCloud or fresh install: updated from 9.02 but on prev version (clean install) same beahvior
ownCloud log (data/owncloud.log, see
Integrity status for oC9+
No errors have been found.

Can you explain how you managed to update step-by-step?

probably you've missed one or two steps.

here is what i usually do when i upgrade an ownCloud-instance:

cd /var/www/html/owncloud
sudo -u www-data php occ maintenance:singleuser --on
mv /var/www/html/owncloud/data /var/www/oc_data
cp /var/www/html/owncloud/config/config.php /var/www/oc_config.php
rm -rf /var/www/html/owncloud
cd /var/www/html && wget
tar xjvf owncloud-9.0.4.tar.bz2
chown -R www-data:www-data /var/www/html/owncloud
cd /var/www/html/owncloud
sudo -u www-data php occ upgrade
sudo -u www-data php occ encryption:migrate
sudo -u www-data php occ files:scan --all
sudo -u www-data php occ maintenance:singleuser --off

and if you're going to run the security-script, which is highly recommended btw, then dont forget to run that as well(not listed here). afterwards set your .htacces, .user.ini, my.cnf, php.ini to the values which covers your needs.

i hope i dint forget anything as well :smile: