Azure New-AzureManagedCache Error: Value cannot be

Question

I'm using Azure PowerShell for Create A Cache and I used New-AzureManagedCache -Name test -Location "East Asia" -Sku Standard -Memory 1GB to invoke. The shell has rendered the error Value cannot be null.

PS C:\> New-AzureManagedCache -Name test -Location "East Asia" -Sku Standard -Memory 1GB
New-AzureManagedCache : Value cannot be null.
Parameter name: subscriptionId
At line:1 char:1
+ New-AzureManagedCache -Name test -Location "East Asia" -Sku Standard -Memory 1GB
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : CloseError: (:) [New-AzureManagedCache], ArgumentNullException
    + FullyQualifiedErrorId : Microsoft.Azure.Commands.ManagedCache.NewAzureManagedCache

Then I tried using New-AzureManagedCache to find that the error happened in the variable of -Location.

PS C:\> New-AzureManagedCache

cmdlet New-AzureManagedCache at command pipeline position 1
Supply values for the following parameters:
Name: test
Location: "East Asia"
New-AzureManagedCache : Value cannot be null.
Parameter name: subscriptionId
At line:1 char:1
+ New-AzureManagedCache
+ ~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : CloseError: (:) [New-AzureManagedCache], ArgumentNullException
    + FullyQualifiedErrorId : Microsoft.Azure.Commands.ManagedCache.NewAzureManagedCache

And what kind of value I can input. Thanks!