When i try to get task via Get-scheduleTask show error

When i try to get schedule task in windows 10 1903 via powershell with get-scheduledtask show follwing error

Get-ScheduledTask : Invalid namespace
At line:1 char:1
+ Get-ScheduledTask
+ ~~~~~~~~~~~~~~~~~
    + CategoryInfo          : MetadataError: (MSFT_ScheduledTask:Root/Microsoft/...T_ScheduledTask) [Get-ScheduledTask
   ], CimException
    + FullyQualifiedErrorId : HRESULT 0x8004100e,Get-ScheduledTask`

I check ps version :

PS C:\WINDOWS\system32> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      5.1.18362.752
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.18362.752
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

What should i do ?