SOLVED - No upload or files on web - mobile ok

I've installed the latest Owncloud 9.1.1 (stable) and there is no upload button or no files (even the example ones) on the web. Via the iphone app it all looks ok - and I can upload there no problem. Just the web is not there.

Server configuration
Operating system: Ubuntu 16.04.1 LTS
Web server: Apache/2.4.18 (Ubuntu)
Database: 10.0.27-MariaDB-0ubuntu0.16.04.1
PHP version: PHP 7.0.8-0ubuntu0.16.04.3
ownCloud version : 9.1.1 (stable)
Updated from an older ownCloud or fresh install: Fresh install
Special configuration (external storage, external authentication, reverse proxy, server-side-encryption): SSL

Integrity status for oC9+

No errors have been found.

Thanks

Please provide logfiles

I managed to find and fix the error - it was related to some security settings I had in Apache to make the apache server less susceptible to attacks.

By removing:
Header set Content-Security-Policy "script-src 'self'; object-src 'self'"

from the apache conf - the software worked as advertised