diff --git a/Tranga/Connector.cs b/Tranga/Connector.cs
index 9a3ffee..e6ea509 100644
--- a/Tranga/Connector.cs
+++ b/Tranga/Connector.cs
@@ -20,6 +20,10 @@ public abstract class Connector
     {
         this.downloadLocation = downloadLocation;
         this.logger = logger;
+        this.downloadClient = new DownloadClient(new Dictionary<byte, int>()
+        {
+            //RequestTypes for RateLimits
+        }, logger);
     }
     
     public abstract string name { get; } //Name of the Connector (e.g. Website)
@@ -219,6 +223,7 @@ public abstract class Connector
                 }
                 catch (HttpRequestException e)
                 {
+                    logger?.WriteLine(this.GetType().ToString(), e.Message);
                     Thread.Sleep(_rateLimit[requestType] * 2);
                 }
             }
diff --git a/Tranga/Connectors/MangaDex.cs b/Tranga/Connectors/MangaDex.cs
index f949c40..1867f86 100644
--- a/Tranga/Connectors/MangaDex.cs
+++ b/Tranga/Connectors/MangaDex.cs
@@ -276,7 +276,7 @@ public class MangaDex : Connector
             return;
         }
 
-        if (publication.posterUrl is null || !(bool)publication.posterUrl?.Contains("http"))
+        if (publication.posterUrl is null || publication.posterUrl!.Contains("http"))
         {
             logger?.WriteLine(this.GetType().ToString(), $"No Poster-URL in publication");
             return;
diff --git a/Tranga/TaskManager.cs b/Tranga/TaskManager.cs
index de0a63d..e13da8a 100644
--- a/Tranga/TaskManager.cs
+++ b/Tranga/TaskManager.cs
@@ -25,7 +25,7 @@ public class TaskManager
     /// <param name="komgaUsername">The Komga username</param>
     /// <param name="komgaPassword">The Komga password</param>
     /// <param name="logger"></param>
-    public TaskManager(string downloadFolderPath, string? workingDirectory = null, string? komgaBaseUrl = null, string? komgaUsername = null, string? komgaPassword = null, Logger? logger = null)
+    public TaskManager(string downloadFolderPath, string workingDirectory, string? komgaBaseUrl = null, string? komgaUsername = null, string? komgaPassword = null, Logger? logger = null)
     {
         this.logger = logger;
         _allTasks = new HashSet<TrangaTask>();
@@ -170,7 +170,7 @@ public class TaskManager
                 _allTasks.Add(newTask);
             }
             else
-                logger.WriteLine(this.GetType().ToString(), $"Publication already exists {publication?.internalId}");
+                logger?.WriteLine(this.GetType().ToString(), $"Publication already exists {publication?.internalId}");
         }
         logger?.WriteLine(this.GetType().ToString(), $"Added new Task {newTask.ToString()}");
         ExportData();