remove extra logging and ignore service sessions if WMI class not found

hass-workstation-service/Domain/Sensors/SessionStateSensor.cs

@@ -68,12 +68,10 @@ namespace hass_workstation_service.Domain.Sensors
 
                 var scope = new ManagementScope();
                 scope.Connect();
-                Log.Logger.Information("Connected to Scope");
+
                 var explorerProcesses = Process.GetProcessesByName("explorer")
                                             .Select(p => p.Id.ToString())
                                             .ToHashSet();
-
-                Log.Logger.Information("Created explorerprocess list");
                 var REprocessid = new Regex(@"(?<=Handle="").*?(?="")", RegexOptions.Compiled);
 
                 var numberOfLogonSessionsWithExplorer = new ManagementObjectSearcher(scope, new SelectQuery("SELECT * FROM Win32_SessionProcess")).Get()
@@ -82,18 +80,20 @@ namespace hass_workstation_service.Domain.Sensors
                                                             .Select(mo => mo["Antecedent"].ToString())
                                                             .Distinct()
                                                             .Count();
+                int numberOfUserDesktops = 1;
 
+                // this can fail sometimes, that's why we set numberOfUserDesktops to 1
+                try
+                {
+                    numberOfUserDesktops = new ManagementObjectSearcher(scope, new SelectQuery("select * from win32_Perfrawdata_TermService_TerminalServicesSession")).Get().Count - 1; // don't count Service desktop
+                }
+                catch
+                {
                     
-                Log.Logger.Information("Created numberOfLogonSessionsWithExplorer");
-
-                var numberOfUserDesktops = new ManagementObjectSearcher(scope, new SelectQuery("select * from win32_Perfrawdata_TermService_TerminalServicesSession")).Get().Count - 1; // don't count Service desktop
-
-                Log.Logger.Information("Created numberOfUserDesktops");
+                }
 
                 var numberOflogonUIProcesses = Process.GetProcessesByName("LogonUI").Length;
 
-                Log.Logger.Information("Created numberOflogonUIProcesses");
-
                 if (numberOflogonUIProcesses >= numberOfUserDesktops)
                 {
                     if (numberOfLogonSessionsWithExplorer > 0)