Gallery App is blank after upgrade to 13

Nextcloud version (eg, 12.0.2): 13
Operating system and version (eg, Ubuntu 17.04): Ubuntu 16.04
Apache or nginx version (eg, Apache 2.4.25): Nginx 1.10.3
PHP version (eg, 7.1): 7.1 (tried 7.2 too)

The issue you are facing:

The Gallery app does not display any files or folders. All that is displayed is the two sort buttons on the top left, and the share, i, and menu buttons on the right. None of these buttons appear to fucntion.

Is this the first time you’ve seen this error? (Y/N): Yes

Steps to replicate it:

  1. click on gallery, mostly white page, no pictures.

The output of your Nextcloud log in Admin > Logging:

Nothing

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

PASTE HERE

The output of your Apache/nginx/system log in /var/log/____:

Nothing

I got a similar error. Why Jony gets no answer?

therefore:

Could be theming or css/js-caching (just guessing): Display issues after upgrade to NC 13.0.0

Disable Link Editor solved my problem.