vagrant up 실행시 에러 나는 경우 처리

아래와 같은 에러 나는 경우:

vagrant up
The provider 'virtualbox' that was requested to back the machine
'core-01' is reporting that it isn't usable on this system. The
reason is shown below:

Vagrant could not detect VirtualBox! Make sure VirtualBox is properly installed.
Vagrant uses the `VBoxManage` binary that ships with VirtualBox, and requires
this to be available on the PATH. If VirtualBox is installed, please find the
`VBoxManage` binary and add it to the PATH environmental variable.

->

(This PC -> Advanced System Settings -> Environmental Variables -> Search for VBOX_MSI_INSTALL_PATH and change it to VBOX_INSTALL_PATH)

이렇게 바꾸면 된다