Avatar and saving webserver files

Good morning,
We are launching the company cloud at Seafile CE.
server CentOS 7.7.1908
Seafile 7.0.5
We have two problems.

  1. In the place of the avatar we display no image and the inscription avatars.
  2. After adding the txt file and opening it in the browser, we make changes in the content and click save. The icon changes appearance but nothing happens. The file is not saved, the error cannot be seen on the page.
    I will add that Nginx is the broker

Thank you for the tips and help
Piotrek