For those experiencing issues with PowerShell, you can execute the following commands:
PS C:> [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 -bor [Net.SecurityProtocolType]::Tls11 -bor [Net.SecurityProtocolType]::Tls
PS C:> Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Force
PS C:> Set-PSRepository -Name 'PSGallery' -InstallationPolicy Trusted
PS C:> . ./PassTester.ps1