Resolved test error

FitConnect/EncryptedSender.cs

@@ -23,7 +23,7 @@ public partial class Sender {
             throw new ArgumentException("Submission is not ready");
 
         Logger?.LogInformation("Uploading pre encrypted attachments");
-        UploadAttachmentsAsync(Submission.Id!, attachments);
+        UploadAttachments(Submission.Id!, attachments);
         return this;
     }