Vagrant failed to install plugin vbguest

[mccaroni]

Hi, thank you for creating this tutorial! However I'm stuck with an error.
OS: Windows 10 Pro
Vagrant version: 1.8.4
Virtual Box version: 5.0.28

C:\Users\student\Downloads\puppet-tutorial-pe>vagrant plugin install vagrant-vbguest
Installing the 'vagrant-vbguest' plugin. This can take a few minutes...
Bundler, the underlying system Vagrant uses to install plugins,
reported an error. The error is shown below. These errors are usually
caused by misconfigured plugin installations or transient network
issues. The error from Bundler is:

An error occurred while installing ffi (1.13.1), and Bundler cannot continue.
Make sure that `gem install ffi -v '1.13.1'` succeeds before bundling.

Warning: this Gemfile contains multiple primary sources. Using `source` more than once without a block is a security risk, and may result in installing unexpected gems. To resolve this warning, use a block to indicate which gems should come from the secondary source. To upgrade this warning to an error, run `bundle config disable_multisource true`.Gem::InstallError: ffi requires Ruby version < 2.8.dev, >= 2.3.

[mccaroni]

Closing this issue now. Using the latest versions of Vagrant (2.2.10) and VirtualBox (6.1.12) are working.