If an error occurs when opening a website in a browser ERR_CONTENT_DECODING_FAILED, the reason could be the inclusion of gzip compression in adminpanels the site itself. Since the compression on the hosting enabled by default, enabling compression on the site results in the data being compressed twice, which prevents the browser from unpacking it.

To fix the situation:

  1. Openup config file site.
  2. Find a line like this:
    public $gzip = '1';
  3. Replace in it 1 on 0so that it looks like this:
    public $gzip = '0';
  4. Check the site is working.