如何编辑Powershell脚本以继续出现错误？

我修改了这个脚本（ https://gallery.technet.microsoft.com/scriptcenter/Create-HTML-Uptime-and-68e6acc0 ）来命中多个服务器，但是它不会生成报告，即使只有一个系统是下。 如何修改脚本以继续出现错误并在最后生成报告？ 错误是：

Get-WmiObject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) At C:\Users\user\Desktop\CheckDiskSpaceDomain\GetDiskDriveSpaceDomain.ps1:19 char:25 + $os = Get-WmiObject <<<< -class win32_OperatingSystem -cn $s + CategoryInfo : InvalidOperation: (:) [Get-WmiObject], COMException + FullyQualifiedErrorId : GetWMICOMException,Microsoft.PowerShell.Commands.GetWmiObjectCommand You cannot call a method on a null-valued expression. At C:\Users\user\Desktop\CheckDiskSpaceDomain\GetDiskDriveSpaceDomain.ps1:21 char:51 + uptime = (get-date) - $os.converttodatetime <<<< ($os.lastbootuptime)} + CategoryInfo : InvalidOperation: (converttodatetime:String) [], RuntimeException + FullyQualifiedErrorId : InvokeMethodOnNull 

 -ErrorAction "Resume" 

 if ($OS -ne $null){ $uptime = (get-date) - $os.converttodatetime } else { write-host " OS is null" }