Search NTLM V1

[vicreactor]

I'm trying to check if in domain used NTLM V1 so I run this command.

Find-NTLMNetworkLogon | Where-Object {$_.UserName -notlike "ANONYMOUS LOGON" -and $_.Properties[14].Value -ne "NTLM V2" }
geting response many times of this error:

Cannot index into a null array.
At line:1 char:40
+ ... ere-Object {$_.UserName -notlike "ANONYMOUS LOGON" -and $_.Properties ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : NullArray

If array is empty then no logs equal this kind of search?