Chown problem? After authenticating correctly, nextcloud ask aganis. No access

🚧 Installation
1

After authenticating (http) nextcloud asks me again credentials.

Nextcloud version : 15.0.5
Operating system and version : Ubuntu 16.04
Apache srv
PHP version: 7.0

I suposse I’ve misconfigured directory ownership.

2

You mean when you access via web-browser? Which browser, any extensions?