i obtain the following error, when i run this script, can you please help..

Get-VMHostService : Cannot bind parameter 'VMHost'. Cannot convert the "" value of type "System.Management.Automation.PSCustomObject" to type
"VMware.VimAutomation.ViCore.Types.V1.Inventory.VMHost".
At line:20 char:31
+ Get-VMHostService -VMHost $ESXHostObject | where{$_.Key -eq 'TSM- ...
+ ~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Get-VMHostService], ParameterBindingException
+ FullyQualifiedErrorId : CannotConvertArgumentNoMessage,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetVMHostService

New-SSHSession : No connection could be made because the target machine actively refused it
At line:21 char:16
+ ... $session = New-SSHSession -ComputerName $ESXHost.Name -Credential $c ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (Renci.SshNet.SshClient:SshClient) [New-SSHSession], SocketException
+ FullyQualifiedErrorId : SSH.NewSshSession

Invoke-SSHCommand : Cannot bind argument to parameter 'SSHSession' because it is null.
At line:22 char:35
+ Invoke-SSHCommand -SSHSession $session -Command $cmdSub | Select ...
+ ~~~~~~~~
+ CategoryInfo : InvalidData: (:) [Invoke-SSHCommand], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Invoke-SSHCommand