gvfs-daemons software package provides userspace virtual filesystem - servers, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gvfs-daemons
gvfs-daemons is installed in your system.
Make ensure the gvfs-daemons package were installed using the commands given below,
$ sudo dpkg-query -l | grep gvfs-daemons *
You will get with gvfs-daemons package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Libraries |
| Package | gvfs-daemons |
| Version | 1.30.1.1-1 |
| Description | userspace virtual filesystem - servers |
| Sub Section | Libs |