Issue restoring disk

[nvaiser]

I'm testing this script (thanks for this by the way!)

I'm having an issue running the recovery script, it could not remove the data disk (I even made sure to stop the VM via Azure portal so it said "deallocated" and tried again.

[2018-08-14 13:18:58Z] [Running] Removing data disk from rescue VM rescueNatTest-SRV2016
[2018-08-14 13:18:58Z] [Error] Unable to remove data disk from rescue VM.
[2018-08-14 13:18:58Z] [Error] Unable to remove data disk from rescue VM. - System.Management.Automation.ParameterBindingValidationException
[2018-08-14 13:18:58Z] Exception Message: Cannot validate argument on parameter 'DataDiskNames'. The argument is null, empty, or an element of the argument collection contains a null value. Supply a collection that does not contain any null values and then try the command again.

Any ideas?

Thanks