Error Activating Azure Stack in Disconnected Mode

When attempting to Activate an Azure Stack running in disconnected mode, I'm receiving the following error when using the 'New-AzsActivationResource' cmdlet:

`Cannot bind argument to parameter 'ActivationKey' because it is an empty string. `

The variable of $ActivationKey is correctly populated using Get-Content -Path 'keyfile.txt'

The issue looks to be in the 'RegisterWithAzure.psm1' module at line 1557.

Launching my own PEP session and using the adjusted command below allowed me to successfully register the stack:

`Invoke-Command -Session $session -ArgumentList $ActivationKey { New-AzureStackActivation -ActivationKey $args[0] -TimeoutInSeconds 1800}`