Fix wrong deserialization

API/Dockerfile

@@ -3,7 +3,6 @@
 FROM mcr.microsoft.com/dotnet/sdk:7.0 as build-env
 WORKDIR /src
 COPY . /src/
-RUN ls -l /src
 RUN dotnet restore /src/API/API.csproj
 RUN dotnet publish -c Release -o /publish
 

Tranga/Migrate.cs

@@ -1,4 +1,5 @@
-using Newtonsoft.Json;
+using Logging;
+using Newtonsoft.Json;
 
 namespace Tranga;
 
@@ -21,7 +22,11 @@ public static class Migrate
 
     private static void RemoveUpdateLibraryTask(TrangaSettings settings)
     {
-        List<TrangaTask> tasks = JsonConvert.DeserializeObject<List<TrangaTask>>(settings.tasksFilePath)!;
+        if (!File.Exists(settings.tasksFilePath))
+            return;
+
+        string tasksJsonString = File.ReadAllText(settings.tasksFilePath);
+        List<TrangaTask> tasks = JsonConvert.DeserializeObject<List<TrangaTask>>(tasksJsonString, new JsonSerializerSettings { Converters = { new TrangaTask.TrangaTaskJsonConverter() } })!;
         tasks.RemoveAll(t => t.task == TrangaTask.Task.UpdateLibraries);
     }
 }