Seeking to fix this error: "Failed while adding virtual Ethernet switch connections."

I am getting the error below when trying ot make modifications to my Hyper-V.

I am trying to add a new Virtual Adaptor.

Hoping someone may have a suggestion on how to fix this.

Error:

New-VMSwitch : Failed while adding virtual Ethernet switch connections.
Failed to connect Ethernet switch port (switch name = 'XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', port name =
'XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', adapter GUID = '{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'): The system cannot
find the file specified. (0x80070002).
The operation failed because the file was not found.
At line:1 char:1
+ New-VMSwitch -Name "LAN1" -NetAdapterName "Ethernet" -AllowManagementOS $True
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (Microsoft.HyperV.PowerShell.VMTask:VMTask) [New-VMSwitch], Virtualizati
   onOperationFailedException
    + FullyQualifiedErrorId : ObjectNotFound,Microsoft.HyperV.PowerShell.Commands.NewVMSwitchCommand