unibit: cannot be loaded because running scripts is disabled on this system

Hi. I was going through your tutorial: https://www.stackbit.com/blog/hugo-stackbit-tutorial/

I installed unibit using: `npm install -g @stackbit/unibit`

When I type `unibit validate`

I'm getting this message
`unibit : File AppData\Roaming\npm\unibit.ps1 cannot be loaded because running scripts is disabled on this system.`

I'm running a Windows 10 machine. 