Add error handling to world view loading

Torch.Server/Managers/InstanceManager.cs

@@ -70,10 +70,18 @@ namespace Torch.Server.Managers
             var worldFolders = Directory.EnumerateDirectories(Path.Combine(Torch.Config.InstancePath, "Saves"));
 
             foreach (var f in worldFolders)
+            {
+                try
                 {
                     if (!string.IsNullOrEmpty(f) && File.Exists(Path.Combine(f, "Sandbox.sbc")))
                         DedicatedConfig.Worlds.Add(new WorldViewModel(f));
                 }
+                catch (Exception ex)
+                {
+                    Log.Error("Failed to load world at path: " + f);
+                    continue;
+                }
+            }
 
             if (DedicatedConfig.Worlds.Count == 0)
             {
@@ -91,11 +99,20 @@ namespace Torch.Server.Managers
             DedicatedConfig.LoadWorld = worldPath;
             
             var worldInfo = DedicatedConfig.Worlds.FirstOrDefault(x => x.WorldPath == worldPath);
+            try
+            {
                 if (worldInfo?.Checkpoint == null)
                 {
                     worldInfo = new WorldViewModel(worldPath);
                     DedicatedConfig.Worlds.Add(worldInfo);
                 }
+            }
+            catch (Exception ex)
+            {
+                Log.Error("Failed to load world at path: " + worldPath);
+                DedicatedConfig.LoadWorld = null;
+                return;
+            }
 
             DedicatedConfig.SelectedWorld = worldInfo;
             if (DedicatedConfig.SelectedWorld?.Checkpoint != null)
@@ -255,6 +272,8 @@ namespace Torch.Server.Managers
         public CheckpointViewModel Checkpoint { get; private set; }
 
         public WorldViewModel(string worldPath)
+        {
+            try
             {
                 WorldPath = worldPath;
                 WorldSizeKB = new DirectoryInfo(worldPath).GetFiles().Sum(x => x.Length) / 1024;
@@ -262,6 +281,12 @@ namespace Torch.Server.Managers
                 FolderName = Path.GetFileName(worldPath);
                 BeginLoadCheckpoint();
             }
+            catch (ArgumentException ex)
+            {
+                Log.Error($"World view model failed to load the path: {worldPath} Please ensure this is a valid path.");
+                throw; //rethrow to be handled further up the stack
+            }
+        }
 
         public async Task SaveCheckpointAsync()
         {