Any initial configuration about owncloud with collabora office?

Steps to reproduce

  1. Open a session on my owncloud server
  2. Go to aditional section to add url of collabora server with https://
  3. Apply changes
  4. Go to folders area and try to add a file.
  5. You can see image ()
  6. Press button Enter.
  7. It doesn't anything. Don't show any error.

    Where could I see any report?

Expected behaviour

I would like to create any document of collabora office.
An Impress
A Writer
I would like to open and share all types of documents integrates in collabora office by platform owncloud that I install in my server.

Actual behaviour

It doesn't anything. Don't show any error.
I don't know where is log or what log I would need see.

Server configuration

Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

Web server:
https://own.campusdomar.es/cloud

PHP version:
PHP7.0

ownCloud version: (see ownCloud admin page)
ownCloud 10.0.2 (stable)

Signing status:
It is running with some warnings.

The content of config/config.php:

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your ownCloud installation folder

List of activated apps:
All info here.
https://own.campusdomar.es/cloud/config_list.txt

Are you using encryption: yes/no
NO

Logs

Web server error log

I check them and both are emply if I follow steps to reproduce

ownCloud log (data/owncloud.log)

Insert your ownCloud log here

It is emptly

Browser log

There isn't error log

You should use the ownCloud appliance. It's really easy to work with collabora with that.

You can get the appliance from https://owncloud.org Just click on download > server > and the appliance tab.