Getprivs Command in Meterpreter Returns a "Operation Timed Out" on Windows Server 2012 R2

I've gotten NT AUTHORITY\SYSTEM on a system by migrating into lsass.exe

but when I run the command "getprivs", as a result I get a "Operation Timed Out"

even when UAC is disabled

I don't understand why ?

Any information will be greatly appreciated