NextCloud on Android

I have nextloud running on an old kindle fire, and it works! But I get this in the overview settings:

Your data directory and files are probably accessible from the Internet. The .htaccess file is not working. It is strongly recommended that you configure your web server so that the data directory is no longer accessible, or move the data directory outside the web server document root.

I tried editing /etc/apache2/apache2.conf but there is no /etc/apache2. So what do I do? Can it even be fixed? I dont think it can becasue this is a kindle fire… And if i do nothing about it, is it avalible to the internet? I didin’t port foward it…