No folders moved in the cloud

Hello

Expected behaviour

Tell us what should happen:
Cloud directories should be available.

Actual behaviour

Tell us what happens instead:

I installed the nextcloud on Raspberry PI3.
Everything runs fine, adds files via www and from android application.
Unfortunately there are no files that have been copied locally by file explorer.
Permissions are assigned the same as all directories.

Server configuration

Operating system:
Raspbian GNU/Linux 8
Web server:
Apache2
Database:
mysql 5.5.57
PHP version:
7,0,19
Nextcloud version: (see Nextcloud admin page)
11.0.2

Please help, I can not handle it.