local folder workspace

ModpackUpdater/InstallInfos.cs

@@ -6,7 +6,7 @@ namespace ModpackUpdater;
 public class InstallInfos : IActionSetInfos
 {
     [JsonConverter(typeof(Newtonsoft.Json.Converters.VersionConverter))]
-    public Version Version { get; set; }
+    public Version Version { get; set; } = new();
 
     [DefaultValue(true)]
     public bool IsPublic { get; set; } = true;
@@ -17,8 +17,10 @@ public class InstallInfos : IActionSetInfos
 
     IEnumerable<InstallAction> IActionSet.Actions => Actions;
 
-    public static InstallInfos Parse(string content)
+    public static InstallInfos? Parse(string? content)
     {
+        if (string.IsNullOrWhiteSpace(content))
+            return null;
         return JsonConvert.DeserializeObject<InstallInfos>(content);
     }
 

ModpackUpdater/UpdateInfos.cs

@@ -6,8 +6,10 @@ public class UpdateInfos
 {
     public List<UpdateInfo> Updates { get; private set; } = [];
 
-    public static UpdateInfos Parse(string content)
+    public static UpdateInfos? Parse(string? content)
     {
+        if (string.IsNullOrWhiteSpace(content))
+            return null;
         return JsonConvert.DeserializeObject<UpdateInfos>(content);
     }