Attempting to build Proton, though this is coming up at this time.

I'm currently running off Ubuntu/PopOS 20.04.1 LTS and have followed the easy build path to a tee
Below is some more info on the plugins, and VM startup:

cdagaming@pop-os:~/Documents/Repos/Proton$ vagrant plugin list
vagrant-sshfs (1.3.5, global)
vagrant-vbguest (0.24.0, global)
cdagaming@pop-os:~/Documents/Repos/Proton$ vagrant --version
Vagrant 2.2.9
cdagaming@pop-os:~/Documents/Repos/Proton$ make install
vagrant up
Platform: 12 CPUs, 15977 MB memory
Bringing machine 'debian10' up with 'virtualbox' provider...
==> debian10: Checking if box 'generic/debian10' version '3.0.22' is up to date...
==> debian10: Clearing any previously set forwarded ports...
==> debian10: Clearing any previously set network interfaces...
==> debian10: Preparing network interfaces based on configuration...
    debian10: Adapter 1: nat
==> debian10: Forwarding ports...
    debian10: 22 (guest) => 2222 (host) (adapter 1)
==> debian10: Running 'pre-boot' VM customizations...
==> debian10: Booting VM...
==> debian10: Waiting for machine to boot. This may take a few minutes...
    debian10: SSH address: 127.0.0.1:2222
    debian10: SSH username: vagrant
    debian10: SSH auth method: private key
==> debian10: Machine booted and ready!
[debian10] GuestAdditions 6.1.10 running --- OK.
==> debian10: Checking for guest additions in VM...
==> debian10: Rsyncing folder: /home/cdagaming/Documents/Repos/Proton/ => /home/vagrant/proton
==> debian10:   - Exclude: [".vagrant/", "vagrant_share"]
The 'sftp-server' executable file can't be found on the host machine but
is required for sshfs mounting to work. Please install the software and 
try again.
make: *** [Makefile:96: vagrant] Error 1